present

I sin

You sin

He sins

She sins

It sins

We sin

They sin

past

I sinned

You sinned

He sinned

She sinned

It sinned

We sinned

They sinned

future

I will sin

You will sin

He will sin

She will sin

It will sin

We will sin

They will sin

conditional

I would sin

You would sin

He would sin

She would sin

It would sin

We would sin

They would sin