English verb conjugation
MUST RESPIRE

Regular verb: respire - respired - respired

Affirmation

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

Negation

Simple form	V-ing form
I mustn't respire you mustn't respire she mustn't respire we mustn't respire you mustn't respire they mustn't respire	I mustn't be respiring you mustn't be respiring she mustn't be respiring we mustn't be respiring you mustn't be respiring they mustn't be respiring
Perfect	V-ing perfect
I mustn't have respired you mustn't have respired she mustn't have respired we mustn't have respired you mustn't have respired they mustn't have respired	I mustn't have been respiring you mustn't have been respiring she mustn't have been respiring we mustn't have been respiring you mustn't have been respiring they mustn't have been respiring

Interrogative form

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

Interro-negative form

Simple form	V-ing form
mustn't I respire? mustn't you respire? mustn't she respire? mustn't we respire? mustn't you respire? mustn't they respire?	mustn't I be respiring? mustn't you be respiring? mustn't she be respiring? mustn't we be respiring? mustn't you be respiring? mustn't they be respiring?
Perfect	V-ing perfect
mustn't I have respired? mustn't you have respired? mustn't she have respired? mustn't we have respired? mustn't you have respired? mustn't they have respired?	mustn't I have been respiring? mustn't you have been respiring? mustn't she have been respiring? mustn't we have been respiring? mustn't you have been respiring? mustn't they have been respiring?