C31231211111133131211113313331333133313331323223313331333133313331333212221   >>    C3123121111113313121111331333133313331333132322331333133313331333133321222   <<    C31231211111133131211113313331333133313331323223313331333133313331333212223   >>      C31231211111133131211113313331333133313331323223313331333133313331333212222   >>