C31231211111133131211113313331333133313331323223313331333133313331333112332231   >>    C3123121111113313121111331333133313331333132322331333133313331333133311233223   <<    C31231211111133131211113313331333133313331323223313331333133313331333112332233   >>      C31231211111133131211113313331333133313331323223313331333133313331333112332232   >>