English verb conjugation
COULD FRISK

Regular verb: frisk - frisked - frisked

Affirmation

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

Negation

Simple form	V-ing form
I could not frisk you could not frisk he could not frisk we could not frisk you could not frisk they could not frisk	I could not be frisking you could not be frisking he could not be frisking we could not be frisking you could not be frisking they could not be frisking
Perfect	V-ing perfect
I could not have frisked you could not have frisked he could not have frisked we could not have frisked you could not have frisked they could not have frisked	I could not have been frisking you could not have been frisking he could not have been frisking we could not have been frisking you could not have been frisking they could not have been frisking

Interrogative form

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

Interro-negative form

Simple form	V-ing form
could I not frisk? could you not frisk? could he not frisk? could we not frisk? could you not frisk? could they not frisk?	could I not be frisking? could you not be frisking? could he not be frisking? could we not be frisking? could you not be frisking? could they not be frisking?
Perfect	V-ing perfect
could I not have frisked? could you not have frisked? could he not have frisked? could we not have frisked? could you not have frisked? could they not have frisked?	could I not have been frisking? could you not have been frisking? could he not have been frisking? could we not have been frisking? could you not have been frisking? could they not have been frisking?