>>>"a plant at the plant that's a plant"
>>
>>Said Robert Plant.
>>
>>>How about: It's a good idea to get someone's ideas, blow the horn then dive to a great depth.
>>>
>>>You can use the same word 4 times there. What's the new sentence?
>>
>>Want to get me into endless loop trying to get to the bottom of this? I give up.
>
>In short: It's sound to sound, sound and then sound
>
>Dragan, you disappoint me!

Sorry, I'm not really myself. I didn't know the fourth meaning of the word.

Say, if "undermine" means to dig under, what's the word to describe planting an explosive device under?