C11111333133313232233133313331333133313221333133313232212111133132311211111   >>    C1111133313331323223313331333133313331322133313331323221211113313231121111   <<    C11111333133313232233133313331333133313221333133313232212111133132311211113   >>      C11111333133313232233133313331333133313221333133313232212111133132311211112   >>