How do you write shelling in a sentence?

As a transitive verb

To remove the shell of...

Jason is shelling oysters

To fire shells at...

The army is shelling the enemy.

An an intransitive verb

to collect shells...

Sue spent the day shelling at the beach.

As a phrasal verb (Informal)

to pay or hand over...

Mike is shelling out a ton of cash for that new car.