C312312111133131121333133313113313331333133313331323132212233231   >>    C31231211113313112133313331311331333133313331333132313221223323   <<    C312312111133131121333133313113313331333133313331323132212233233   >>      C312312111133131121333133313113313331333133313331323132212233232   >>