4) Past Perfect Continuous

I had been playing football for two hours.
You had been playing football for two hours.
He had been playing football for two hours.
She had been playing football for two hours.
We had been playing football for two hours.
You had been playing football for two hours.
They had been playing football for two hours.

*Question

Had I been playing football for two hours?
Had you been playing football for two hours?
Had he been playing football for two hours?
Had she been playing football for two hours?
Had we been playing football for two hours?
Had you been playing football for two hours?
Had they been playing football for two hours?

*Negative

I hadn't been playing football for two hours?
You hadn't been playing football for two hours?
He hadn't been playing football for two hours?
She hadn't been playing football for two hours?
We hadn't been playing football for two hours?
You hadn't been playing football for two hours?
They hadn't been playing football for two hours?