English verb conjugation
COULD IMPORT

Regular verb: import - imported - imported

Affirmation

Simple form	V-ing form
I could import you could import he could import we could import you could import they could import	I could be importing you could be importing he could be importing we could be importing you could be importing they could be importing
Perfect	V-ing perfect
I could have imported you could have imported he could have imported we could have imported you could have imported they could have imported	I could have been importing you could have been importing he could have been importing we could have been importing you could have been importing they could have been importing

Negation

Simple form	V-ing form
I couldn't import you couldn't import he couldn't import we couldn't import you couldn't import they couldn't import	I couldn't be importing you couldn't be importing he couldn't be importing we couldn't be importing you couldn't be importing they couldn't be importing
Perfect	V-ing perfect
I couldn't have imported you couldn't have imported he couldn't have imported we couldn't have imported you couldn't have imported they couldn't have imported	I couldn't have been importing you couldn't have been importing he couldn't have been importing we couldn't have been importing you couldn't have been importing they couldn't have been importing

Interrogative form

Simple form	V-ing form
could I import? could you import? could he import? could we import? could you import? could they import?	could I be importing? could you be importing? could he be importing? could we be importing? could you be importing? could they be importing?
Perfect	V-ing perfect
could I have imported? could you have imported? could he have imported? could we have imported? could you have imported? could they have imported?	could I have been importing? could you have been importing? could he have been importing? could we have been importing? could you have been importing? could they have been importing?

Interro-negative form

Simple form	V-ing form
couldn't I import? couldn't you import? couldn't he import? couldn't we import? couldn't you import? couldn't they import?	couldn't I be importing? couldn't you be importing? couldn't he be importing? couldn't we be importing? couldn't you be importing? couldn't they be importing?
Perfect	V-ing perfect
couldn't I have imported? couldn't you have imported? couldn't he have imported? couldn't we have imported? couldn't you have imported? couldn't they have imported?	couldn't I have been importing? couldn't you have been importing? couldn't he have been importing? couldn't we have been importing? couldn't you have been importing? couldn't they have been importing?