English verb conjugation
COULD APPAL

Regular verb: appal - appaled - appaled

Affirmation

Simple form	V-ing form
I could appal you could appal he could appal we could appal you could appal they could appal	I could be appaling you could be appaling he could be appaling we could be appaling you could be appaling they could be appaling
Perfect	V-ing perfect
I could have appaled you could have appaled he could have appaled we could have appaled you could have appaled they could have appaled	I could have been appaling you could have been appaling he could have been appaling we could have been appaling you could have been appaling they could have been appaling

Negation

Simple form	V-ing form
I could not appal you could not appal he could not appal we could not appal you could not appal they could not appal	I could not be appaling you could not be appaling he could not be appaling we could not be appaling you could not be appaling they could not be appaling
Perfect	V-ing perfect
I could not have appaled you could not have appaled he could not have appaled we could not have appaled you could not have appaled they could not have appaled	I could not have been appaling you could not have been appaling he could not have been appaling we could not have been appaling you could not have been appaling they could not have been appaling

Interrogative form

Simple form	V-ing form
could I appal? could you appal? could he appal? could we appal? could you appal? could they appal?	could I be appaling? could you be appaling? could he be appaling? could we be appaling? could you be appaling? could they be appaling?
Perfect	V-ing perfect
could I have appaled? could you have appaled? could he have appaled? could we have appaled? could you have appaled? could they have appaled?	could I have been appaling? could you have been appaling? could he have been appaling? could we have been appaling? could you have been appaling? could they have been appaling?

Interro-negative form

Simple form	V-ing form
could I not appal? could you not appal? could he not appal? could we not appal? could you not appal? could they not appal?	could I not be appaling? could you not be appaling? could he not be appaling? could we not be appaling? could you not be appaling? could they not be appaling?
Perfect	V-ing perfect
could I not have appaled? could you not have appaled? could he not have appaled? could we not have appaled? could you not have appaled? could they not have appaled?	could I not have been appaling? could you not have been appaling? could he not have been appaling? could we not have been appaling? could you not have been appaling? could they not have been appaling?