English verb conjugation
CAN GLADDEN

Regular verb: gladden - gladdened - gladdened

Affirmation

Simple form	V-ing form
I can gladden you can gladden he can gladden we can gladden you can gladden they can gladden	I can be gladdening you can be gladdening he can be gladdening we can be gladdening you can be gladdening they can be gladdening
Perfect	V-ing perfect
I can have gladdened you can have gladdened he can have gladdened we can have gladdened you can have gladdened they can have gladdened	I can have been gladdening you can have been gladdening he can have been gladdening we can have been gladdening you can have been gladdening they can have been gladdening

Negation

Simple form	V-ing form
I can't gladden you can't gladden he can't gladden we can't gladden you can't gladden they can't gladden	I can't be gladdening you can't be gladdening he can't be gladdening we can't be gladdening you can't be gladdening they can't be gladdening
Perfect	V-ing perfect
I can't have gladdened you can't have gladdened he can't have gladdened we can't have gladdened you can't have gladdened they can't have gladdened	I can't have been gladdening you can't have been gladdening he can't have been gladdening we can't have been gladdening you can't have been gladdening they can't have been gladdening

Interrogative form

Simple form	V-ing form
can I gladden? can you gladden? can he gladden? can we gladden? can you gladden? can they gladden?	can I be gladdening? can you be gladdening? can he be gladdening? can we be gladdening? can you be gladdening? can they be gladdening?
Perfect	V-ing perfect
can I have gladdened? can you have gladdened? can he have gladdened? can we have gladdened? can you have gladdened? can they have gladdened?	can I have been gladdening? can you have been gladdening? can he have been gladdening? can we have been gladdening? can you have been gladdening? can they have been gladdening?

Interro-negative form

Simple form	V-ing form
can't I gladden? can't you gladden? can't he gladden? can't we gladden? can't you gladden? can't they gladden?	can't I be gladdening? can't you be gladdening? can't he be gladdening? can't we be gladdening? can't you be gladdening? can't they be gladdening?
Perfect	V-ing perfect
can't I have gladdened? can't you have gladdened? can't he have gladdened? can't we have gladdened? can't you have gladdened? can't they have gladdened?	can't I have been gladdening? can't you have been gladdening? can't he have been gladdening? can't we have been gladdening? can't you have been gladdening? can't they have been gladdening?