English verb conjugation
MUST PAIR

Regular verb: pair - paired - paired

Affirmation

Simple form	V-ing form
I must pair you must pair she must pair we must pair you must pair they must pair	I must be pairing you must be pairing she must be pairing we must be pairing you must be pairing they must be pairing
Perfect	V-ing perfect
I must have paired you must have paired she must have paired we must have paired you must have paired they must have paired	I must have been pairing you must have been pairing she must have been pairing we must have been pairing you must have been pairing they must have been pairing

Negation

Simple form	V-ing form
I must not pair you must not pair she must not pair we must not pair you must not pair they must not pair	I must not be pairing you must not be pairing she must not be pairing we must not be pairing you must not be pairing they must not be pairing
Perfect	V-ing perfect
I must not have paired you must not have paired she must not have paired we must not have paired you must not have paired they must not have paired	I must not have been pairing you must not have been pairing she must not have been pairing we must not have been pairing you must not have been pairing they must not have been pairing

Interrogative form

Simple form	V-ing form
must I pair? must you pair? must she pair? must we pair? must you pair? must they pair?	must I be pairing? must you be pairing? must she be pairing? must we be pairing? must you be pairing? must they be pairing?
Perfect	V-ing perfect
must I have paired? must you have paired? must she have paired? must we have paired? must you have paired? must they have paired?	must I have been pairing? must you have been pairing? must she have been pairing? must we have been pairing? must you have been pairing? must they have been pairing?

Interro-negative form

Simple form	V-ing form
must I not pair? must you not pair? must she not pair? must we not pair? must you not pair? must they not pair?	must I not be pairing? must you not be pairing? must she not be pairing? must we not be pairing? must you not be pairing? must they not be pairing?
Perfect	V-ing perfect
must I not have paired? must you not have paired? must she not have paired? must we not have paired? must you not have paired? must they not have paired?	must I not have been pairing? must you not have been pairing? must she not have been pairing? must we not have been pairing? must you not have been pairing? must they not have been pairing?