C31231211111133131211113313331333133313331323223313331333133313331333212233231   >>    C3123121111113313121111331333133313331333132322331333133313331333133321223323   <<    C31231211111133131211113313331333133313331323223313331333133313331333212233233   >>      C31231211111133131211113313331333133313331323223313331333133313331333212233232   >>