C11111333133313232233133313331333133313231313131211113313232212323221   >>    C1111133313331323223313331333133313331323131313121111331323221232322   <<    C11111333133313232233133313331333133313231313131211113313232212323223   >>      C11111333133313232233133313331333133313231313131211113313232212323222   >>