English verb conjugation
MUST FRISK

Regular verb: frisk - frisked - frisked

Affirmation

Simple form	V-ing form
I must frisk you must frisk he must frisk we must frisk you must frisk they must frisk	I must be frisking you must be frisking he must be frisking we must be frisking you must be frisking they must be frisking
Perfect	V-ing perfect
I must have frisked you must have frisked he must have frisked we must have frisked you must have frisked they must have frisked	I must have been frisking you must have been frisking he must have been frisking we must have been frisking you must have been frisking they must have been frisking

Negation

Simple form	V-ing form
I mustn't frisk you mustn't frisk he mustn't frisk we mustn't frisk you mustn't frisk they mustn't frisk	I mustn't be frisking you mustn't be frisking he mustn't be frisking we mustn't be frisking you mustn't be frisking they mustn't be frisking
Perfect	V-ing perfect
I mustn't have frisked you mustn't have frisked he mustn't have frisked we mustn't have frisked you mustn't have frisked they mustn't have frisked	I mustn't have been frisking you mustn't have been frisking he mustn't have been frisking we mustn't have been frisking you mustn't have been frisking they mustn't have been frisking

Interrogative form

Simple form	V-ing form
must I frisk? must you frisk? must he frisk? must we frisk? must you frisk? must they frisk?	must I be frisking? must you be frisking? must he be frisking? must we be frisking? must you be frisking? must they be frisking?
Perfect	V-ing perfect
must I have frisked? must you have frisked? must he have frisked? must we have frisked? must you have frisked? must they have frisked?	must I have been frisking? must you have been frisking? must he have been frisking? must we have been frisking? must you have been frisking? must they have been frisking?

Interro-negative form

Simple form	V-ing form
mustn't I frisk? mustn't you frisk? mustn't he frisk? mustn't we frisk? mustn't you frisk? mustn't they frisk?	mustn't I be frisking? mustn't you be frisking? mustn't he be frisking? mustn't we be frisking? mustn't you be frisking? mustn't they be frisking?
Perfect	V-ing perfect
mustn't I have frisked? mustn't you have frisked? mustn't he have frisked? mustn't we have frisked? mustn't you have frisked? mustn't they have frisked?	mustn't I have been frisking? mustn't you have been frisking? mustn't he have been frisking? mustn't we have been frisking? mustn't you have been frisking? mustn't they have been frisking?