English verb conjugation
COULD BREATH

Regular verb: breath - breathed - breathed

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form	V-ing form
I could breath you could breath he could breath we could breath you could breath they could breath	I could be breathing you could be breathing he could be breathing we could be breathing you could be breathing they could be breathing
Perfect	V-ing perfect
I could have breathed you could have breathed he could have breathed we could have breathed you could have breathed they could have breathed	I could have been breathing you could have been breathing he could have been breathing we could have been breathing you could have been breathing they could have been breathing

Negation

Simple form	V-ing form
I could not breath you could not breath he could not breath we could not breath you could not breath they could not breath	I could not be breathing you could not be breathing he could not be breathing we could not be breathing you could not be breathing they could not be breathing
Perfect	V-ing perfect
I could not have breathed you could not have breathed he could not have breathed we could not have breathed you could not have breathed they could not have breathed	I could not have been breathing you could not have been breathing he could not have been breathing we could not have been breathing you could not have been breathing they could not have been breathing

Interrogative form

Simple form	V-ing form
could I breath? could you breath? could he breath? could we breath? could you breath? could they breath?	could I be breathing? could you be breathing? could he be breathing? could we be breathing? could you be breathing? could they be breathing?
Perfect	V-ing perfect
could I have breathed? could you have breathed? could he have breathed? could we have breathed? could you have breathed? could they have breathed?	could I have been breathing? could you have been breathing? could he have been breathing? could we have been breathing? could you have been breathing? could they have been breathing?

Interro-negative form

Simple form	V-ing form
could I not breath? could you not breath? could he not breath? could we not breath? could you not breath? could they not breath?	could I not be breathing? could you not be breathing? could he not be breathing? could we not be breathing? could you not be breathing? could they not be breathing?
Perfect	V-ing perfect
could I not have breathed? could you not have breathed? could he not have breathed? could we not have breathed? could you not have breathed? could they not have breathed?	could I not have been breathing? could you not have been breathing? could he not have been breathing? could we not have been breathing? could you not have been breathing? could they not have been breathing?