I can't find my ballpoint pen.

He ended up in a state of confusion.

He likes wearing suspenders.

This world continues to give rise to innumerable changes.

Pentadecane is produced in this chemical reaction.

This compound is an organic chemical called pentacosane.

In organic chemistry, pentatriacontane is a saturated hydrocarbon consisting of 36 carbon atoms.

My new tablet comes with a stylus.

This beautiful zoisite necklace is my favorite.

The Soviet Union was once a socialist country.