C11111333133313232233133313331333133313231312111133132212133313123111   >>    C1111133313331323223313331333133313331323131211113313221213331312311   <<    C11111333133313232233133313331333133313231312111133132212133313123113   >>      C11111333133313232233133313331333133313231312111133132212133313123112   >>