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Indicative

Present Simple
Perfect Simple
Past Simple
Pluperfect Simple
Future Simple
Future perfect Simple
Present Continuous
Perfect Continuous
Past Continuous
Pluperfect Continuous
Future Continuous
Future perfect Continuous
I base upon
you base upon
he/she/it bases upon
we base upon
they base upon
I have based upon
you have based upon
he/she/it has based upon
we have based upon
they have based upon
I based upon
you based upon
he/she/it based upon
we based upon
they based upon
I had based upon
you had based upon
he/she/it had based upon
we had based upon
they had based upon
I will base upon
you will base upon
he/she/it will base upon
we will base upon
they will base upon
I will have based upon
you will have based upon
he/she/it will have based upon
we will have based upon
they will have based upon
I am basing upon
you are basing upon
he/she/it is basing upon
we are basing upon
they are basing upon
I have been basing upon
you have been basing upon
he/she/it has been basing upon
we have been basing upon
they have been basing upon
I was basing upon
you were basing upon
he/she/it was basing upon
we were basing upon
they were basing upon
I had been basing upon
you had been basing upon
he/she/it had been basing upon
we had been basing upon
they had been basing upon
I will be basing upon
you will be basing upon
he/she/it will be basing upon
we will be basing upon
they will be basing upon
I will have been basing upon
you will have been basing upon
he/she/it will have been basing upon
we will have been basing upon
they will have been basing upon

Subjunctive

Present Simple
Perfect Simple
Imperfect Simple
Pluperfect Simple
I base upon
you base upon
he/she/it base upon
we base upon
they base upon
I have based upon
you have based upon
he/she/it have based upon
we have based upon
they have based upon
I based upon
you based upon
he/she/it based upon
we based upon
they based upon
I had based upon
you had based upon
he/she/it had based upon
we had based upon
they had based upon

Conditional

Present Simple
Perfect Simple
Present Continuous
Perfect Continuous
I would base upon
you would base upon
he/she/it would base upon
we would base upon
they would base upon
I would have based upon
you would have based upon
he/she/it would have based upon
we would have based upon
they would have based upon
I would be basing upon
you would be basing upon
he/she/it would be basing upon
we would be basing upon
they would be basing upon
I would have been basing upon
you would have been basing upon
he/she/it would have been basing upon
we would have been basing upon
they would have been basing upon

Imperative

you base upon
we Let's base upon

← Conjugate another English verb

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