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