English verb conjugation
CAN CHAFF

Regular verb: chaff - chaffed - chaffed

Affirmation

Simple form	V-ing form
I can chaff you can chaff she can chaff we can chaff you can chaff they can chaff	I can be chaffing you can be chaffing she can be chaffing we can be chaffing you can be chaffing they can be chaffing
Perfect	V-ing perfect
I can have chaffed you can have chaffed she can have chaffed we can have chaffed you can have chaffed they can have chaffed	I can have been chaffing you can have been chaffing she can have been chaffing we can have been chaffing you can have been chaffing they can have been chaffing

Negation

Simple form	V-ing form
I can't chaff you can't chaff she can't chaff we can't chaff you can't chaff they can't chaff	I can't be chaffing you can't be chaffing she can't be chaffing we can't be chaffing you can't be chaffing they can't be chaffing
Perfect	V-ing perfect
I can't have chaffed you can't have chaffed she can't have chaffed we can't have chaffed you can't have chaffed they can't have chaffed	I can't have been chaffing you can't have been chaffing she can't have been chaffing we can't have been chaffing you can't have been chaffing they can't have been chaffing

Interrogative form

Simple form	V-ing form
can I chaff? can you chaff? can she chaff? can we chaff? can you chaff? can they chaff?	can I be chaffing? can you be chaffing? can she be chaffing? can we be chaffing? can you be chaffing? can they be chaffing?
Perfect	V-ing perfect
can I have chaffed? can you have chaffed? can she have chaffed? can we have chaffed? can you have chaffed? can they have chaffed?	can I have been chaffing? can you have been chaffing? can she have been chaffing? can we have been chaffing? can you have been chaffing? can they have been chaffing?

Interro-negative form

Simple form	V-ing form
can't I chaff? can't you chaff? can't she chaff? can't we chaff? can't you chaff? can't they chaff?	can't I be chaffing? can't you be chaffing? can't she be chaffing? can't we be chaffing? can't you be chaffing? can't they be chaffing?
Perfect	V-ing perfect
can't I have chaffed? can't you have chaffed? can't she have chaffed? can't we have chaffed? can't you have chaffed? can't they have chaffed?	can't I have been chaffing? can't you have been chaffing? can't she have been chaffing? can't we have been chaffing? can't you have been chaffing? can't they have been chaffing?