π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π
π
π/2
60π
30π