C31231211111133131211113313331333133313331323223313331333133313331333112133211   >>    C3123121111113313121111331333133313331333132322331333133313331333133311213321   <<    C31231211111133131211113313331333133313331323223313331333133313331333112133213   >>      C31231211111133131211113313331333133313331323223313331333133313331333112133212   >>