C312312111133131121333133313113313331333133313331333133313331333133313222212231   >>    C31231211113313112133313331311331333133313331333133313331333133313331322221223   <<    C312312111133131121333133313113313331333133313331333133313331333133313222212233   >>      C312312111133131121333133313113313331333133313331333133313331333133313222212232   >>