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