(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})
(Ba^{2+}>Sr^{2+}>Ca^{2+}>Mg^{2+})
(Ca^{2+}>Mg^{2+}>Be^{2+}>Ba^{2+})
(Mg^{2+}>Ca^{2+}>Ba^{2+}>Be^{2+})
(Ba^{2+}>Mg^{2+}>Be^{2+}>Ca^{2+})