could incur
Regular verb: incur - incurred- incurred

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could incur
you could incur
he could incur
we could incur
you could incur
they could incur 	I could be incurring
you could be incurring
he could be incurring
we could be incurring
you could be incurring
they could be incurring	I could have incurred
you could have incurred
he 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
he 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 	Perfect 	V-ing perfect 	
I could not incur
you could not incur
he could not incur
we could not incur
you could not incur
they could not incur 	I could not be incurring
you could not be incurring
he could not be incurring
we could not be incurring
you could not be incurring
they could not be incurring	I could not have incurred
you could not have incurred
he could not have incurred
we could not have incurred
you could not have incurred
they could not have incurred	I could not have been incurring
you could not have been incurring
he could not have been incurring
we could not have been incurring
you could not have been incurring
they could not have been incurring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I incur?
could you incur?
could he incur?
could we incur?
could you incur?
could they incur? 	could I be incurring?
could you be incurring?
could he be incurring?
could we be incurring?
could you be incurring?
could they be incurring? 	could I have incurred?
could you have incurred?
could he 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 he 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 	Perfect 	V-ing perfect 	
could I not incur?
could you not incur?
could he not incur?
could we not incur?
could you not incur?
could they not incur? 	could I not be incurring?
could you not be incurring?
could he not be incurring?
could we not be incurring?
could you not be incurring?
could they not be incurring? 	could I not have incurred?
could you not have incurred?
could he not have incurred?
could we not have incurred?
could you not have incurred?
could they not have incurred? 	could I not have been incurring?
could you not have been incurring?
could he not have been incurring?
could we not have been incurring?
could you not have been incurring?
could they not have been incurring?