C312312111133131121333133313113313331333133313331333133313331333133313222221311   >>    C31231211113313112133313331311331333133313331333133313331333133313331322222131   <<    C312312111133131121333133313113313331333133313331333133313331333133313222221313   >>      C312312111133131121333133313113313331333133313331333133313331333133313222221312   >>