C111123313331323113313331333133313121111133112121111331323323223321   >>    C11112331333132311331333133313331312111113311212111133132332322332   <<    C111123313331323113313331333133313121111133112121111331323323223323   >>      C111123313331323113313331333133313121111133112121111331323323223322   >>