Determine fours sets of letters that make words when combined in the given pairs.

Example:

1,2 Terror
1,4 Heroic deeds
2,3 Curved entryway
3,4 Over-coffee talks

Answer: fe/ar/ch/ats

1.
1, 2 Spell
1, 4 Coins
2, 3 Protective covering
3, 4 Defoliant agent

-2.
1, 2 Expel from legal profession
1, 4 Sickness
2, 3 Fun amount of monkeys
3, 4 Waiver

-3.
1, 2 Pop
1, 4 Grave
2, 3 Russian villa
3, 4 Enclosed space

-4.
1, 2 Element in all organic life
1, 4 Cautious
2, 3 Extra
3, 4 Serviceable

5.
1, 2 Cuban dance
1, 4 Tumbling box
2, 3 German state
3, 4 Aberrant

6.
1, 2 Reliable
1, 4 Hookey player
2, 3 Dash
3, 4 Listed

neat puzzle Pandora

4. car/bon/us/eful

Thank you, soot, and it's the only one of this type that I have. It's almost impossible to make more - for me, at least.

michele, good solve!

3. so / da / cha / mber

Yes!

2. dis / bar /rel /ease

Well done, manxie!