English verb conjugation
CAN INCUR

Regular verb: incur - incurred - incurred

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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