English verb conjugation
MUST SKIRT

Regular verb: skirt - skirted - skirted

Affirmation

Simple form	V-ing form
I must skirt you must skirt he must skirt we must skirt you must skirt they must skirt	I must be skirting you must be skirting he must be skirting we must be skirting you must be skirting they must be skirting
Perfect	V-ing perfect
I must have skirted you must have skirted he must have skirted we must have skirted you must have skirted they must have skirted	I must have been skirting you must have been skirting he must have been skirting we must have been skirting you must have been skirting they must have been skirting

Negation

Simple form	V-ing form
I must not skirt you must not skirt he must not skirt we must not skirt you must not skirt they must not skirt	I must not be skirting you must not be skirting he must not be skirting we must not be skirting you must not be skirting they must not be skirting
Perfect	V-ing perfect
I must not have skirted you must not have skirted he must not have skirted we must not have skirted you must not have skirted they must not have skirted	I must not have been skirting you must not have been skirting he must not have been skirting we must not have been skirting you must not have been skirting they must not have been skirting

Interrogative form

Simple form	V-ing form
must I skirt? must you skirt? must he skirt? must we skirt? must you skirt? must they skirt?	must I be skirting? must you be skirting? must he be skirting? must we be skirting? must you be skirting? must they be skirting?
Perfect	V-ing perfect
must I have skirted? must you have skirted? must he have skirted? must we have skirted? must you have skirted? must they have skirted?	must I have been skirting? must you have been skirting? must he have been skirting? must we have been skirting? must you have been skirting? must they have been skirting?

Interro-negative form

Simple form	V-ing form
must I not skirt? must you not skirt? must he not skirt? must we not skirt? must you not skirt? must they not skirt?	must I not be skirting? must you not be skirting? must he not be skirting? must we not be skirting? must you not be skirting? must they not be skirting?
Perfect	V-ing perfect
must I not have skirted? must you not have skirted? must he not have skirted? must we not have skirted? must you not have skirted? must they not have skirted?	must I not have been skirting? must you not have been skirting? must he not have been skirting? must we not have been skirting? must you not have been skirting? must they not have been skirting?