Present
I back
you back
he backs
we back
you back
they back

Perfect
I have backed
you have backed
he has backed
we have backed
you have backed
they have backed

Past
I backed
you backed
he backed
we backed
you backed
they backed

Pluperfect
I had backed
you had backed
he had backed
we had backed
you had backed
they had backed

Future
I will back
you will back
he will back
we will back
you will back
they will back

Future perfect
I will have backed
you will have backed
he will have backed
we will have backed
you will have backed
they will have backed

Present
I back
you back
he back
we back
you back
they back

Present
I have backed
you have backed
he have backed
we have backed
you have backed
they have backed

Imperfect
I backed
you backed
he backed
we backed
you backed
they backed

Pluperfect
I had backed
you had backed
he had backed
we had backed
you had backed
they had backed

Present
I would back
you would back
he would back
we would back
you would back
they would back

Perfect
I would have backed
you would have backed
he would have backed
we would have backed
you would have backed
they would have backed

you back
we Let's back
you back

Present
I am backing
you are backing
he is backing
we are backing
you are backing
they are backing

Perfect
I have been backing
you have been backing
he has been backing
we have been backing
you have been backing
they have been backing

Past
I was backing
you were backing
he was backing
we were backing
you were backing
they were backing

Pluperfect
I had been backing
you had been backing
he had been backing
we had been backing
you had been backing
they had been backing

Future
I will be backing
you will be backing
he will be backing
we will be backing
you will be backing
they will be backing

Future perfect
I will have been backing
you will have been backing
he will have been backing
we will have been backing
you will have been backing
they will have been backing

Present
I would be backing
you would be backing
he would be backing
we would be backing
you would be backing
they would be backing

Perfect
I would have been backing
you would have been backing
he would have been backing
we would have been backing
you would have been backing
they would have been backing