This form is single-entry.

It's as easy as pie!

She came \

She went out in her birthday suit.

It is necessary to reduce to its simplest form in order to better understand.

Simple interest is calculated only on the initial amount of the investment.

Her natural simplicity is refreshing.

The simplicities of life are sometimes the most beautiful.

The passé simples are difficult

He is often considered a simpleton by his colleagues.