English verb conjugation
COULD PERSPIRE

Regular verb: perspire - perspired - perspired

Affirmation

Simple form	V-ing form
I could perspire you could perspire he could perspire we could perspire you could perspire they could perspire	I could be perspiring you could be perspiring he could be perspiring we could be perspiring you could be perspiring they could be perspiring
Perfect	V-ing perfect
I could have perspired you could have perspired he could have perspired we could have perspired you could have perspired they could have perspired	I could have been perspiring you could have been perspiring he could have been perspiring we could have been perspiring you could have been perspiring they could have been perspiring

Negation

Simple form	V-ing form
I could not perspire you could not perspire he could not perspire we could not perspire you could not perspire they could not perspire	I could not be perspiring you could not be perspiring he could not be perspiring we could not be perspiring you could not be perspiring they could not be perspiring
Perfect	V-ing perfect
I could not have perspired you could not have perspired he could not have perspired we could not have perspired you could not have perspired they could not have perspired	I could not have been perspiring you could not have been perspiring he could not have been perspiring we could not have been perspiring you could not have been perspiring they could not have been perspiring

Interrogative form

Simple form	V-ing form
could I perspire? could you perspire? could he perspire? could we perspire? could you perspire? could they perspire?	could I be perspiring? could you be perspiring? could he be perspiring? could we be perspiring? could you be perspiring? could they be perspiring?
Perfect	V-ing perfect
could I have perspired? could you have perspired? could he have perspired? could we have perspired? could you have perspired? could they have perspired?	could I have been perspiring? could you have been perspiring? could he have been perspiring? could we have been perspiring? could you have been perspiring? could they have been perspiring?

Interro-negative form

Simple form	V-ing form
could I not perspire? could you not perspire? could he not perspire? could we not perspire? could you not perspire? could they not perspire?	could I not be perspiring? could you not be perspiring? could he not be perspiring? could we not be perspiring? could you not be perspiring? could they not be perspiring?
Perfect	V-ing perfect
could I not have perspired? could you not have perspired? could he not have perspired? could we not have perspired? could you not have perspired? could they not have perspired?	could I not have been perspiring? could you not have been perspiring? could he not have been perspiring? could we not have been perspiring? could you not have been perspiring? could they not have been perspiring?