C1111233131211111211113313331333133313232321333133313112133313232232132111   >>    C111123313121111121111331333133313331323232133313331311213331323223213211   <<    C1111233131211111211113313331333133313232321333133313112133313232232132113   >>      C1111233131211111211113313331333133313232321333133313112133313232232132112   >>