C11111333133313232233133313331333133313231312331323133313223313222221   >>    C1111133313331323223313331333133313331323131233132313331322331322222   <<    C11111333133313232233133313331333133313231312331323133313223313222223   >>      C11111333133313232233133313331333133313231312331323133313223313222222   >>