English verb conjugation
MUST GULL

Regular verb: gull - gulled - gulled

Affirmation

Simple form	V-ing form
I must gull you must gull she must gull we must gull you must gull they must gull	I must be gulling you must be gulling she must be gulling we must be gulling you must be gulling they must be gulling
Perfect	V-ing perfect
I must have gulled you must have gulled she must have gulled we must have gulled you must have gulled they must have gulled	I must have been gulling you must have been gulling she must have been gulling we must have been gulling you must have been gulling they must have been gulling

Negation

Simple form	V-ing form
I must not gull you must not gull she must not gull we must not gull you must not gull they must not gull	I must not be gulling you must not be gulling she must not be gulling we must not be gulling you must not be gulling they must not be gulling
Perfect	V-ing perfect
I must not have gulled you must not have gulled she must not have gulled we must not have gulled you must not have gulled they must not have gulled	I must not have been gulling you must not have been gulling she must not have been gulling we must not have been gulling you must not have been gulling they must not have been gulling

Interrogative form

Simple form	V-ing form
must I gull? must you gull? must she gull? must we gull? must you gull? must they gull?	must I be gulling? must you be gulling? must she be gulling? must we be gulling? must you be gulling? must they be gulling?
Perfect	V-ing perfect
must I have gulled? must you have gulled? must she have gulled? must we have gulled? must you have gulled? must they have gulled?	must I have been gulling? must you have been gulling? must she have been gulling? must we have been gulling? must you have been gulling? must they have been gulling?

Interro-negative form

Simple form	V-ing form
must I not gull? must you not gull? must she not gull? must we not gull? must you not gull? must they not gull?	must I not be gulling? must you not be gulling? must she not be gulling? must we not be gulling? must you not be gulling? must they not be gulling?
Perfect	V-ing perfect
must I not have gulled? must you not have gulled? must she not have gulled? must we not have gulled? must you not have gulled? must they not have gulled?	must I not have been gulling? must you not have been gulling? must she not have been gulling? must we not have been gulling? must you not have been gulling? must they not have been gulling?