The conjugation
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Conjugation of the English verb to sign

Indicative

Simple present

I sign
you sign
he signs
we sign
you sign
they sign

Present progressive/continuous

I am signing
you are signing
he is signing
we are signing
you are signing
they are signing

Simple past

I signed
you signed
he signed
we signed
you signed
they signed

Past progressive/continuous

I was signing
you were signing
he was signing
we were signing
you were signing
they were signing

Present perfect simple

I have signed
you have signed
he has signed
we have signed
you have signed
they have signed

Present perfect progressive/continuous

I have been signing
you have been signing
he has been signing
we have been signing
you have been signing
they have been signing

Past perfect

I had signed
you had signed
he had signed
we had signed
you had signed
they had signed

Past perfect progressive/continuous

I had been signing
you had been signing
he had been signing
we had been signing
you had been signing
they had been signing

Future

I will/shall sign
you will sign
he will sign
we will/shall sign
you will sign
they will sign

Future progressive/continuous

I will/shall be signing
you will be signing
he will be signing
we will/shall be signing
you will be signing
they will be signing

Future perfect

I will/shall have signed
you will have signed
he will have signed
we will/shall have signed
you will have signed
they will have signed

Future perfect continuous

I will/shall have been signing
you will have been signing
he will have been signing
we will/shall have been signing
you will have been signing
they will have been signing

Conditional

Simple

I would/should sign
you would sign
he would sign
we would/should sign
you would sign
they would sign

Progressive

I would/should be signing
you would be signing
he would be signing
we would/should be signing
you would be signing
they would be signing

Perfect

I would/should have signed
you would have signed
he would have signed
we would/should have signed
you would have signed
they would have signed

Perfect progressive

I would/should have been signing
you would have been signing
he would have been signing
we would/should have been signing
you would have been signing
they would have been signing

A few randomly selected verbs