C31231211111133131211113313331333132233133313331312111133132211111   >>    C3123121111113313121111331333133313223313331333131211113313221111   <<    C31231211111133131211113313331333132233133313331312111133132211113   >>      C31231211111133131211113313331333132233133313331312111133132211112   >>