C312312111133131121333133313113313331333133313331333133112111112113313232131   >>    C31231211113313112133313331311331333133313331333133313311211111211331323213   <<    C312312111133131121333133313113313331333133313331333133112111112113313232133   >>      C312312111133131121333133313113313331333133313331333133112111112113313232132   >>