C1111233131211111211113313331333133313221211113313331333133313231121132231   >>    C111123313121111121111331333133313331322121111331333133313331323112113223   <<    C1111233131211111211113313331333133313221211113313331333133313231121132233   >>      C1111233131211111211113313331333133313221211113313331333133313231121132232   >>