C1111233131211111211113313331333133313232321333133313331311233112112113231   >>    C111123313121111121111331333133313331323232133313331333131123311211211323   <<    C1111233131211111211113313331333133313232321333133313331311233112112113233   >>      C1111233131211111211113313331333133313232321333133313331311233112112113232   >>