C312312111133131212111133133313331333133112113313331333133313113313232113221   >>    C31231211113313121211113313331333133313311211331333133313331311331323211322   <<    C312312111133131212111133133313331333133112113313331333133313113313232113223   >>      C312312111133131212111133133313331333133112113313331333133313113313232113222   >>