_________S2S2S2S2____________S2S2S2S2S
______S2S2S2S2S2S2S2_______S2S2S2S2S2S2S2S2
____S2S2S2S2S2S2S2S2S2S___S2S2S2S2S2S2S2S2S2S
___S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2_______S2S2
__S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2_________S2S2
_S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2_______S2S2
_S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2______S
S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2__S2S
S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S_S
S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S
S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S
_S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S
__S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S
____S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2S2
______S2S2S2S2S2S2S2