C11111333133313232233133313331333132313232223323132313331323131211   >>    C1111133313331323223313331333133313231323222332313231333132313121   <<    C11111333133313232233133313331333132313232223323132313331323131213   >>      C11111333133313232233133313331333132313232223323132313331323131212   >>