What 20 different words go into wonderful?

The first Word is underflow. It uses all 9 letters.

There are many other Words that can be found in the Word 'wonderful', e.g.

1. drew, drown, run, fled, frown, furl, weld.
2. duel, row.
3. endow.
4. fowl, flew, wren / owl, wolf, den.
5. fern, flower, dew / elf, furled, flu.
   
6. flue.
7. fuel, flow.
8. Own, owe, fund, refund?
9. No, nor on down under, lower!
   
10. One worn round red urn? Old or new? Fun?
    
11. Word wend end? Lord, we would wonder!
    

Pick any 20 from list.
And you may be able to think of a few others ...