C11111333133313232233133313331333133313331312111133133312112131   >>    C1111133313331323223313331333133313331333131211113313331211213   <<    C11111333133313232233133313331333133313331312111133133312112133   >>      C11111333133313232233133313331333133313331312111133133312112132   >>