C31231211111133131211113313331333133313331323223313331333133313331333112123221   >>    C3123121111113313121111331333133313331333132322331333133313331333133311212322   <<    C31231211111133131211113313331333133313331323223313331333133313331333112123223   >>      C31231211111133131211113313331333133313331323223313331333133313331333112123222   >>