C1111133313331323223313331333133313113313112113121111331323231111   >>    C111113331333132322331333133313331311331311211312111133132323111   <<    C1111133313331323223313331333133313113313112113121111331323231113   >>      C1111133313331323223313331333133313113313112113121111331323231112   >>