English verb conjugation
COULD INCUR

Regular verb: incur - incurred - incurred

Affirmation

Simple form	V-ing form
I could incur you could incur she could incur we could incur you could incur they could incur	I could be incurring you could be incurring she could be incurring we could be incurring you could be incurring they could be incurring
Perfect	V-ing perfect
I could have incurred you could have incurred she could have incurred we could have incurred you could have incurred they could have incurred	I could have been incurring you could have been incurring she could have been incurring we could have been incurring you could have been incurring they could have been incurring

Negation

Simple form	V-ing form
I couldn't incur you couldn't incur she couldn't incur we couldn't incur you couldn't incur they couldn't incur	I couldn't be incurring you couldn't be incurring she couldn't be incurring we couldn't be incurring you couldn't be incurring they couldn't be incurring
Perfect	V-ing perfect
I couldn't have incurred you couldn't have incurred she couldn't have incurred we couldn't have incurred you couldn't have incurred they couldn't have incurred	I couldn't have been incurring you couldn't have been incurring she couldn't have been incurring we couldn't have been incurring you couldn't have been incurring they couldn't have been incurring

Interrogative form

Simple form	V-ing form
could I incur? could you incur? could she incur? could we incur? could you incur? could they incur?	could I be incurring? could you be incurring? could she be incurring? could we be incurring? could you be incurring? could they be incurring?
Perfect	V-ing perfect
could I have incurred? could you have incurred? could she have incurred? could we have incurred? could you have incurred? could they have incurred?	could I have been incurring? could you have been incurring? could she have been incurring? could we have been incurring? could you have been incurring? could they have been incurring?

Interro-negative form

Simple form	V-ing form
couldn't I incur? couldn't you incur? couldn't she incur? couldn't we incur? couldn't you incur? couldn't they incur?	couldn't I be incurring? couldn't you be incurring? couldn't she be incurring? couldn't we be incurring? couldn't you be incurring? couldn't they be incurring?
Perfect	V-ing perfect
couldn't I have incurred? couldn't you have incurred? couldn't she have incurred? couldn't we have incurred? couldn't you have incurred? couldn't they have incurred?	couldn't I have been incurring? couldn't you have been incurring? couldn't she have been incurring? couldn't we have been incurring? couldn't you have been incurring? couldn't they have been incurring?