C11111333133313232233133313331333133313231313131211113313221121121   >>    C1111133313331323223313331333133313331323131313121111331322112112   <<    C11111333133313232233133313331333133313231313131211113313221121123   >>      C11111333133313232233133313331333133313231313131211113313221121122   >>