English verb conjugation
CAN NIGGLE

Regular verb: niggle - niggled - niggled

Affirmation

Simple form	V-ing form
I can niggle you can niggle he can niggle we can niggle you can niggle they can niggle	I can be niggling you can be niggling he can be niggling we can be niggling you can be niggling they can be niggling
Perfect	V-ing perfect
I can have niggled you can have niggled he can have niggled we can have niggled you can have niggled they can have niggled	I can have been niggling you can have been niggling he can have been niggling we can have been niggling you can have been niggling they can have been niggling

Negation

Simple form	V-ing form
I can't niggle you can't niggle he can't niggle we can't niggle you can't niggle they can't niggle	I can't be niggling you can't be niggling he can't be niggling we can't be niggling you can't be niggling they can't be niggling
Perfect	V-ing perfect
I can't have niggled you can't have niggled he can't have niggled we can't have niggled you can't have niggled they can't have niggled	I can't have been niggling you can't have been niggling he can't have been niggling we can't have been niggling you can't have been niggling they can't have been niggling

Interrogative form

Simple form	V-ing form
can I niggle? can you niggle? can he niggle? can we niggle? can you niggle? can they niggle?	can I be niggling? can you be niggling? can he be niggling? can we be niggling? can you be niggling? can they be niggling?
Perfect	V-ing perfect
can I have niggled? can you have niggled? can he have niggled? can we have niggled? can you have niggled? can they have niggled?	can I have been niggling? can you have been niggling? can he have been niggling? can we have been niggling? can you have been niggling? can they have been niggling?

Interro-negative form

Simple form	V-ing form
can't I niggle? can't you niggle? can't he niggle? can't we niggle? can't you niggle? can't they niggle?	can't I be niggling? can't you be niggling? can't he be niggling? can't we be niggling? can't you be niggling? can't they be niggling?
Perfect	V-ing perfect
can't I have niggled? can't you have niggled? can't he have niggled? can't we have niggled? can't you have niggled? can't they have niggled?	can't I have been niggling? can't you have been niggling? can't he have been niggling? can't we have been niggling? can't you have been niggling? can't they have been niggling?