I'm trying to unscramble the following letters to make a sentence. Help!

ipsoosousceeeuysethsumtatdoyngc

To unscramble the given letters and form a sentence, you can follow these steps:

1. Break down the jumbled letters into individual words:
ipsoosousceeeuysethsumtatdoyngc --> i + p + s + o + o + s + o + u + s + c + e + e + e + u + y + s + e + t + h + s + u + m + t + a + t + d + o + y + n + g + c

2. Rearrange the letters of each word to form meaningful words:
i + p + s + o + o + s + o + u + s + c + e + e + e + u + y + s + t + h + s + u + m + t + a + t + d + o + y + n + g + c
rearranges to: "i + suppose + you + set + this + sum + that + doing"

3. Put the words in the intended order:
"I suppose you set this sum that doing"

Therefore, the unscrambled sentence is: "I suppose you set this sum that doing"