AAAAAAAAA____SSSSSSSS____MM_______MM
AA______AA____SS____________M_M_____M_M
AA______AA____SS____________M__M___M__M
AAAAAAAAA____SSSSSSSS____M___M_M___M
AAAAAAAAA____SSSSSSSS____M____M____M
AA______AA____________SS____M_________M
AA______AA____________SS____M_________M
AA______AA____SSSSSSSS____M_________M