English verb conjugation
COULD BURDEN

Regular verb: burden - burdened - burdened

Affirmation

Simple form	V-ing form
I could burden you could burden he could burden we could burden you could burden they could burden	I could be burdening you could be burdening he could be burdening we could be burdening you could be burdening they could be burdening
Perfect	V-ing perfect
I could have burdened you could have burdened he could have burdened we could have burdened you could have burdened they could have burdened	I could have been burdening you could have been burdening he could have been burdening we could have been burdening you could have been burdening they could have been burdening

Negation

Simple form	V-ing form
I could not burden you could not burden he could not burden we could not burden you could not burden they could not burden	I could not be burdening you could not be burdening he could not be burdening we could not be burdening you could not be burdening they could not be burdening
Perfect	V-ing perfect
I could not have burdened you could not have burdened he could not have burdened we could not have burdened you could not have burdened they could not have burdened	I could not have been burdening you could not have been burdening he could not have been burdening we could not have been burdening you could not have been burdening they could not have been burdening

Interrogative form

Simple form	V-ing form
could I burden? could you burden? could he burden? could we burden? could you burden? could they burden?	could I be burdening? could you be burdening? could he be burdening? could we be burdening? could you be burdening? could they be burdening?
Perfect	V-ing perfect
could I have burdened? could you have burdened? could he have burdened? could we have burdened? could you have burdened? could they have burdened?	could I have been burdening? could you have been burdening? could he have been burdening? could we have been burdening? could you have been burdening? could they have been burdening?

Interro-negative form

Simple form	V-ing form
could I not burden? could you not burden? could he not burden? could we not burden? could you not burden? could they not burden?	could I not be burdening? could you not be burdening? could he not be burdening? could we not be burdening? could you not be burdening? could they not be burdening?
Perfect	V-ing perfect
could I not have burdened? could you not have burdened? could he not have burdened? could we not have burdened? could you not have burdened? could they not have burdened?	could I not have been burdening? could you not have been burdening? could he not have been burdening? could we not have been burdening? could you not have been burdening? could they not have been burdening?