How to use 'long' as a verb

The word 'long' can be an adjective or a verb.

The following sentences contain 'long' which functions as adjectives:
1 It took me a long time to reach the place.
2 He wore a pair of long pants.
3 Everyone will benefit from this project in the long run. [in the long run=finally]
4 Before long, the campers arrived at their destination. [before long=soon]

As a verb, 'long' means 'have a strong wish for or to do'. The sentences below show how 'long' is used correctly as a verb.

1 They long to have a wonderful day at the beach.
2 The girls long to have beautiful complexion.