C111123313331323113313331333133313331323131211113313113313331122211   >>    C11112331333132311331333133313331333132313121111331311331333112221   <<    C111123313331323113313331333133313331323131211113313113313331122213   >>      C111123313331323113313331333133313331323131211113313113313331122212   >>