C1111233131211111211113313331333133313331333133313331333133313233323112111   >>    C111123313121111121111331333133313331333133313331333133313331323332311211   <<    C1111233131211111211113313331333133313331333133313331333133313233323112113   >>      C1111233131211111211113313331333133313331333133313331333133313233323112112   >>