C312312111133131121333133313113313331333133313331333133313331333133313133121221   >>    C31231211113313112133313331311331333133313331333133313331333133313331313312122   <<    C312312111133131121333133313113313331333133313331333133313331333133313133121223   >>      C312312111133131121333133313113313331333133313331333133313331333133313133121222   >>