C1111233131211111211113313331333133313232321333133313331333131121231111   >>    C111123313121111121111331333133313331323232133313331333133313112123111   <<    C1111233131211111211113313331333133313232321333133313331333131121231113   >>      C1111233131211111211113313331333133313232321333133313331333131121231112   >>