木木三王堇
[mù mù sān wáng jĭn]
This is a bit difficult to explain clearly in English as it seems more artistic or literary rather than practical. But '木木', repeated once, emphasizes the meaning (which could refer woodenly or silently). '三王' means three kings. The word '堇'(jin) is the name for violets in flowers but there's no apparent logical connection with former words, which may be attributed to individual preference, imagination or simply the aesthetic effect when stringing several characters/words together.