Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I might breath you might breath he might breath we might breath you might breath they might breath
V-ing form
I might be breathing you might be breathing he might be breathing we might be breathing you might be breathing they might be breathing
Perfect
I might have breathed you might have breathed he might have breathed we might have breathed you might have breathed they might have breathed
V-ing perfect
I might have been breathing you might have been breathing he might have been breathing we might have been breathing you might have been breathing they might have been breathing
Negation
Simple form
I might not breath you might not breath he might not breath we might not breath you might not breath they might not breath
V-ing form
I might not be breathing you might not be breathing he might not be breathing we might not be breathing you might not be breathing they might not be breathing
Perfect
I might not have breathed you might not have breathed he might not have breathed we might not have breathed you might not have breathed they might not have breathed
V-ing perfect
I might not have been breathing you might not have been breathing he might not have been breathing we might not have been breathing you might not have been breathing they might not have been breathing
Interrogative form
Simple form
might I breath? might you breath? might he breath? might we breath? might you breath? might they breath?
V-ing form
might I be breathing? might you be breathing? might he be breathing? might we be breathing? might you be breathing? might they be breathing?
Perfect
might I have breathed? might you have breathed? might he have breathed? might we have breathed? might you have breathed? might they have breathed?
V-ing perfect
might I have been breathing? might you have been breathing? might he have been breathing? might we have been breathing? might you have been breathing? might they have been breathing?
Interro-negative form
Simple form
might I not breath? might you not breath? might he not breath? might we not breath? might you not breath? might they not breath?
V-ing form
might I not be breathing? might you not be breathing? might he not be breathing? might we not be breathing? might you not be breathing? might they not be breathing?
Perfect
might I not have breathed? might you not have breathed? might he not have breathed? might we not have breathed? might you not have breathed? might they not have breathed?
V-ing perfect
might I not have been breathing? might you not have been breathing? might he not have been breathing? might we not have been breathing? might you not have been breathing? might they not have been breathing?