Thanks guys!
Now I wonder which will be fastest:
get wordOffset(word1, tText)
if (it > 0) AND (it = (wordOffset(word2, tText) - 1)) then
or
>
> put space into P
> put replaceText("once upon a time","\s+",P) into cleanVar
> put P&"once upon"&P is in P&cleanVar&P = true