Indicative
Present Indefinite
I contribute
you contribute
he/she/it contributes
we contribute
you contribute
they contribute
Present Continuous
I am contributing
you are contributing
he/she/it is contributing
we are contributing
you are contributing
they are contributing
Present Perfect
I have contributed
you have contributed
he/she/it has contributed
we have contributed
you have contributed
they have contributed
Present Perfect Continuous
I have been contributing
you have been contributing
he/she/it has been contributing
we have been contributing
you have been contributing
they have been contributing
Past Indefinite
I contributed
you contributed
he/she/it contributed
we contributed
you contributed
they contributed
Past Continuous
I was contributing
you were contributing
he/she/it was contributing
we were contributing
you were contributing
they were contributing
Past Perfect
I had contributed
you had contributed
he/she/it had contributed
we had contributed
you had contributed
they had contributed
Past Perfect Continuous
I had been contributing
you had been contributing
he/she/it had been contributing
we had been contributing
you had been contributing
they had been contributing
Future Indefinite
I will contribute
you will contribute
he/she/it will contribute
we will contribute
you will contribute
they will contribute
Future Continuous
I will be contributing
you will be contributing
he/she/it will be contributing
we will be contributing
you will be contributing
they will be contributing
Future Perfect
I will have contributed
you will have contributed
he/she/it will have contributed
we will have contributed
you will have contributed
they will have contributed
Future Perfect Continuous
I will have been contributing
you will have been contributing
he/she/it will have been contributing
we will have been contributing
you will have been contributing
they will have been contributing
Conditional
Conditional Present
I would contribute
you would contribute
he/she/it would contribute
we would contribute
you would contribute
they would contribute
Conditional Present Continuous
I would be contributing
you would be contributing
he/she/it would be contributing
we would be contributing
you would be contributing
they would be contributing
Conditional Perfect
I would have contributed
you would have contributed
he/she/it would have contributed
we would have contributed
you would have contributed
they would have contributed
Conditional Perfect Continuous
I would have been contributing
you would have been contributing
he/she/it would have been contributing
we would have been contributing
you would have been contributing
they would have been contributing