C312312111133131121333133313113313331333133313331333133313331333133313231122221   >>    C31231211113313112133313331311331333133313331333133313331333133313331323112222   <<    C312312111133131121333133313113313331333133313331333133313331333133313231122223   >>      C312312111133131121333133313113313331333133313331333133313331333133313231122222   >>