INTERNAL AFFAIRS I
From BRAIN GAMES FOR WORD NERDS
Francis Heaney

In each of the following pairs of words, the second word can be inserted into the first - but only after changing one letter in the second word. For example, given the word pair NONET - LISTEN, the L in LISTEN could be changed to X and XISTEN inserted after the E in NONET to get NONEXISTENT.

1. ORATE BLITZ
2. TINE URGENT
3. DIED SCORN
4. SPED LUNG
5. DOE GHOUL
6. FORTE MULE
7. DEED POLISH
8. DIARY SPANS
9. PART AMOUR

HINTS:
The letters to be changed in the second words:
1. Z to E
2. G to P
3. O to E
4. N to R
5. L to S
6. E to A
7. P to M
8. A to E
9. R to N

Answers:

1. OBLITERATE
2. TURPENTINE
3. DISCERNED
4. SPLURGED
5. DOGHOUSE
6. FORMULATE
7. DEMOLISHED
8. DISPENSARY
9. PARAMOUNT

Note: In the original puzzle, either word could contain the change - making it more difficult.