English verb conjugation
COULD ASK

Regular verb: ask - asked - asked

Affirmation

Simple form	V-ing form
I could ask you could ask she could ask we could ask you could ask they could ask	I could be asking you could be asking she could be asking we could be asking you could be asking they could be asking
Perfect	V-ing perfect
I could have asked you could have asked she could have asked we could have asked you could have asked they could have asked	I could have been asking you could have been asking she could have been asking we could have been asking you could have been asking they could have been asking

Negation

Simple form	V-ing form
I couldn't ask you couldn't ask she couldn't ask we couldn't ask you couldn't ask they couldn't ask	I couldn't be asking you couldn't be asking she couldn't be asking we couldn't be asking you couldn't be asking they couldn't be asking
Perfect	V-ing perfect
I couldn't have asked you couldn't have asked she couldn't have asked we couldn't have asked you couldn't have asked they couldn't have asked	I couldn't have been asking you couldn't have been asking she couldn't have been asking we couldn't have been asking you couldn't have been asking they couldn't have been asking

Interrogative form

Simple form	V-ing form
could I ask? could you ask? could she ask? could we ask? could you ask? could they ask?	could I be asking? could you be asking? could she be asking? could we be asking? could you be asking? could they be asking?
Perfect	V-ing perfect
could I have asked? could you have asked? could she have asked? could we have asked? could you have asked? could they have asked?	could I have been asking? could you have been asking? could she have been asking? could we have been asking? could you have been asking? could they have been asking?

Interro-negative form

Simple form	V-ing form
couldn't I ask? couldn't you ask? couldn't she ask? couldn't we ask? couldn't you ask? couldn't they ask?	couldn't I be asking? couldn't you be asking? couldn't she be asking? couldn't we be asking? couldn't you be asking? couldn't they be asking?
Perfect	V-ing perfect
couldn't I have asked? couldn't you have asked? couldn't she have asked? couldn't we have asked? couldn't you have asked? couldn't they have asked?	couldn't I have been asking? couldn't you have been asking? couldn't she have been asking? couldn't we have been asking? couldn't you have been asking? couldn't they have been asking?