C11111333133313232233133313331333133313231312111113331311331323311111   >>    C1111133313331323223313331333133313331323131211111333131133132331111   <<    C11111333133313232233133313331333133313231312111113331311331323311113   >>      C11111333133313232233133313331333133313231312111113331311331323311112   >>