C11111333133313232233133313331333133313331311211331323112113111   >>    C1111133313331323223313331333133313331333131121133132311211311   <<    C11111333133313232233133313331333133313331311211331323112113113   >>      C11111333133313232233133313331333133313331311211331323112113112   >>