English verb conjugation
MUST INJECT

Regular verb: inject - injected - injected

Affirmation

Simple form	V-ing form
I must inject you must inject she must inject we must inject you must inject they must inject	I must be injecting you must be injecting she must be injecting we must be injecting you must be injecting they must be injecting
Perfect	V-ing perfect
I must have injected you must have injected she must have injected we must have injected you must have injected they must have injected	I must have been injecting you must have been injecting she must have been injecting we must have been injecting you must have been injecting they must have been injecting

Negation

Simple form	V-ing form
I must not inject you must not inject she must not inject we must not inject you must not inject they must not inject	I must not be injecting you must not be injecting she must not be injecting we must not be injecting you must not be injecting they must not be injecting
Perfect	V-ing perfect
I must not have injected you must not have injected she must not have injected we must not have injected you must not have injected they must not have injected	I must not have been injecting you must not have been injecting she must not have been injecting we must not have been injecting you must not have been injecting they must not have been injecting

Interrogative form

Simple form	V-ing form
must I inject? must you inject? must she inject? must we inject? must you inject? must they inject?	must I be injecting? must you be injecting? must she be injecting? must we be injecting? must you be injecting? must they be injecting?
Perfect	V-ing perfect
must I have injected? must you have injected? must she have injected? must we have injected? must you have injected? must they have injected?	must I have been injecting? must you have been injecting? must she have been injecting? must we have been injecting? must you have been injecting? must they have been injecting?

Interro-negative form

Simple form	V-ing form
must I not inject? must you not inject? must she not inject? must we not inject? must you not inject? must they not inject?	must I not be injecting? must you not be injecting? must she not be injecting? must we not be injecting? must you not be injecting? must they not be injecting?
Perfect	V-ing perfect
must I not have injected? must you not have injected? must she not have injected? must we not have injected? must you not have injected? must they not have injected?	must I not have been injecting? must you not have been injecting? must she not have been injecting? must we not have been injecting? must you not have been injecting? must they not have been injecting?