C11111333133313232233133313331333133112323131121211113313113313231121111   >>    C1111133313331323223313331333133313311232313112121111331311331323112111   <<    C11111333133313232233133313331333133112323131121211113313113313231121113   >>      C11111333133313232233133313331333133112323131121211113313113313231121112   >>