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 couldn't appal you couldn't appal he couldn't appal we couldn't appal you couldn't appal they couldn't appal	I couldn't be appaling you couldn't be appaling he couldn't be appaling we couldn't be appaling you couldn't be appaling they couldn't be appaling
Perfect	V-ing perfect
I couldn't have appaled you couldn't have appaled he couldn't have appaled we couldn't have appaled you couldn't have appaled they couldn't have appaled	I couldn't have been appaling you couldn't have been appaling he couldn't have been appaling we couldn't have been appaling you couldn't have been appaling they couldn't 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
couldn't I appal? couldn't you appal? couldn't he appal? couldn't we appal? couldn't you appal? couldn't they appal?	couldn't I be appaling? couldn't you be appaling? couldn't he be appaling? couldn't we be appaling? couldn't you be appaling? couldn't they be appaling?
Perfect	V-ing perfect
couldn't I have appaled? couldn't you have appaled? couldn't he have appaled? couldn't we have appaled? couldn't you have appaled? couldn't they have appaled?	couldn't I have been appaling? couldn't you have been appaling? couldn't he have been appaling? couldn't we have been appaling? couldn't you have been appaling? couldn't they have been appaling?