English verb conjugation
COULD RESPIRE

Regular verb: respire - respired - respired

Affirmation

Simple form	V-ing form
I could respire you could respire he could respire we could respire you could respire they could respire	I could be respiring you could be respiring he could be respiring we could be respiring you could be respiring they could be respiring
Perfect	V-ing perfect
I could have respired you could have respired he could have respired we could have respired you could have respired they could have respired	I could have been respiring you could have been respiring he could have been respiring we could have been respiring you could have been respiring they could have been respiring

Negation

Simple form	V-ing form
I could not respire you could not respire he could not respire we could not respire you could not respire they could not respire	I could not be respiring you could not be respiring he could not be respiring we could not be respiring you could not be respiring they could not be respiring
Perfect	V-ing perfect
I could not have respired you could not have respired he could not have respired we could not have respired you could not have respired they could not have respired	I could not have been respiring you could not have been respiring he could not have been respiring we could not have been respiring you could not have been respiring they could not have been respiring

Interrogative form

Simple form	V-ing form
could I respire? could you respire? could he respire? could we respire? could you respire? could they respire?	could I be respiring? could you be respiring? could he be respiring? could we be respiring? could you be respiring? could they be respiring?
Perfect	V-ing perfect
could I have respired? could you have respired? could he have respired? could we have respired? could you have respired? could they have respired?	could I have been respiring? could you have been respiring? could he have been respiring? could we have been respiring? could you have been respiring? could they have been respiring?

Interro-negative form

Simple form	V-ing form
could I not respire? could you not respire? could he not respire? could we not respire? could you not respire? could they not respire?	could I not be respiring? could you not be respiring? could he not be respiring? could we not be respiring? could you not be respiring? could they not be respiring?
Perfect	V-ing perfect
could I not have respired? could you not have respired? could he not have respired? could we not have respired? could you not have respired? could they not have respired?	could I not have been respiring? could you not have been respiring? could he not have been respiring? could we not have been respiring? could you not have been respiring? could they not have been respiring?