C11111333133313232233133313331333133313221333133313232213331323133313131211   >>    C1111133313331323223313331333133313331322133313331323221333132313331313121   <<    C11111333133313232233133313331333133313221333133313232213331323133313131213   >>      C11111333133313232233133313331333133313221333133313232213331323133313131212   >>