C31231211111133131211113313331333133313331323133313311211113313331323213121   >>    C3123121111113313121111331333133313331333132313331331121111331333132321312   <<    C31231211111133131211113313331333133313331323133313311211113313331323213123   >>      C31231211111133131211113313331333133313331323133313311211113313331323213122   >>