English verb conjugation
CAN DECLINE

Regular verb: decline - declined - declined

Affirmation

Simple form	V-ing form
I can decline you can decline he can decline we can decline you can decline they can decline	I can be declining you can be declining he can be declining we can be declining you can be declining they can be declining
Perfect	V-ing perfect
I can have declined you can have declined he can have declined we can have declined you can have declined they can have declined	I can have been declining you can have been declining he can have been declining we can have been declining you can have been declining they can have been declining

Negation

Simple form	V-ing form
I can't decline you can't decline he can't decline we can't decline you can't decline they can't decline	I can't be declining you can't be declining he can't be declining we can't be declining you can't be declining they can't be declining
Perfect	V-ing perfect
I can't have declined you can't have declined he can't have declined we can't have declined you can't have declined they can't have declined	I can't have been declining you can't have been declining he can't have been declining we can't have been declining you can't have been declining they can't have been declining

Interrogative form

Simple form	V-ing form
can I decline? can you decline? can he decline? can we decline? can you decline? can they decline?	can I be declining? can you be declining? can he be declining? can we be declining? can you be declining? can they be declining?
Perfect	V-ing perfect
can I have declined? can you have declined? can he have declined? can we have declined? can you have declined? can they have declined?	can I have been declining? can you have been declining? can he have been declining? can we have been declining? can you have been declining? can they have been declining?

Interro-negative form

Simple form	V-ing form
can't I decline? can't you decline? can't he decline? can't we decline? can't you decline? can't they decline?	can't I be declining? can't you be declining? can't he be declining? can't we be declining? can't you be declining? can't they be declining?
Perfect	V-ing perfect
can't I have declined? can't you have declined? can't he have declined? can't we have declined? can't you have declined? can't they have declined?	can't I have been declining? can't you have been declining? can't he have been declining? can't we have been declining? can't you have been declining? can't they have been declining?