What is the main verb of this sentence?

My pocket book collection can be read anytime during travel.

He gifted me a signed copy of his new book.

This email contains ghost characters.

I can't read this email because the characters are corrupted.

Please write this word in lowercase.

She uses a lot of emoticons in her messages.

The Latin alphabet is the most widely used alphabet in the world.

In ancient Egyptian civilization, hieroglyphs were commonly used.

He wrote a message using ideograms.