C31231211111133131211113313331333131211111333132233131333133313222221   >>    C3123121111113313121111331333133313121111133313223313133313331322222   <<    C31231211111133131211113313331333131211111333132233131333133313222223   >>      C31231211111133131211113313331333131211111333132233131333133313222222   >>