C111123313331323113313331333133313121111133112121111331323322121   >>    C11112331333132311331333133313331312111113311212111133132332212   <<    C111123313331323113313331333133313121111133112121111331323322123   >>      C111123313331323113313331333133313121111133112121111331323322122   >>