Indicative
Present Indefinite
I build on
you build on
he/she/it builds on
we build on
you build on
they build on
Present Continuous
I am building on
you are building on
he/she/it is building on
we are building on
you are building on
they are building on
Present Perfect
I have built on
you have built on
he/she/it has built on
we have built on
you have built on
they have built on
Present Perfect Continuous
I have been building on
you have been building on
he/she/it has been building on
we have been building on
you have been building on
they have been building on
Past Indefinite
I built on
you built on
he/she/it built on
we built on
you built on
they built on
Past Continuous
I was building on
you were building on
he/she/it was building on
we were building on
you were building on
they were building on
Past Perfect
I had built on
you had built on
he/she/it had built on
we had built on
you had built on
they had built on
Past Perfect Continuous
I had been building on
you had been building on
he/she/it had been building on
we had been building on
you had been building on
they had been building on
Future Indefinite
I will build on
you will build on
he/she/it will build on
we will build on
you will build on
they will build on
Future Continuous
I will be building on
you will be building on
he/she/it will be building on
we will be building on
you will be building on
they will be building on
Future Perfect
I will have built on
you will have built on
he/she/it will have built on
we will have built on
you will have built on
they will have built on
Future Perfect Continuous
I will have been building on
you will have been building on
he/she/it will have been building on
we will have been building on
you will have been building on
they will have been building on
Conditional
Conditional Present
I would build on
you would build on
he/she/it would build on
we would build on
you would build on
they would build on
Conditional Present Continuous
I would be building on
you would be building on
he/she/it would be building on
we would be building on
you would be building on
they would be building on
Conditional Perfect
I would have built on
you would have built on
he/she/it would have built on
we would have built on
you would have built on
they would have built on
Conditional Perfect Continuous
I would have been building on
you would have been building on
he/she/it would have been building on
we would have been building on
you would have been building on
they would have been building on