English verb conjugation
MUST SKIRMISH

Regular verb: skirmish - skirmished - skirmished

Affirmation

Simple form	V-ing form
I must skirmish you must skirmish he must skirmish we must skirmish you must skirmish they must skirmish	I must be skirmishing you must be skirmishing he must be skirmishing we must be skirmishing you must be skirmishing they must be skirmishing
Perfect	V-ing perfect
I must have skirmished you must have skirmished he must have skirmished we must have skirmished you must have skirmished they must have skirmished	I must have been skirmishing you must have been skirmishing he must have been skirmishing we must have been skirmishing you must have been skirmishing they must have been skirmishing

Negation

Simple form	V-ing form
I mustn't skirmish you mustn't skirmish he mustn't skirmish we mustn't skirmish you mustn't skirmish they mustn't skirmish	I mustn't be skirmishing you mustn't be skirmishing he mustn't be skirmishing we mustn't be skirmishing you mustn't be skirmishing they mustn't be skirmishing
Perfect	V-ing perfect
I mustn't have skirmished you mustn't have skirmished he mustn't have skirmished we mustn't have skirmished you mustn't have skirmished they mustn't have skirmished	I mustn't have been skirmishing you mustn't have been skirmishing he mustn't have been skirmishing we mustn't have been skirmishing you mustn't have been skirmishing they mustn't have been skirmishing

Interrogative form

Simple form	V-ing form
must I skirmish? must you skirmish? must he skirmish? must we skirmish? must you skirmish? must they skirmish?	must I be skirmishing? must you be skirmishing? must he be skirmishing? must we be skirmishing? must you be skirmishing? must they be skirmishing?
Perfect	V-ing perfect
must I have skirmished? must you have skirmished? must he have skirmished? must we have skirmished? must you have skirmished? must they have skirmished?	must I have been skirmishing? must you have been skirmishing? must he have been skirmishing? must we have been skirmishing? must you have been skirmishing? must they have been skirmishing?

Interro-negative form

Simple form	V-ing form
mustn't I skirmish? mustn't you skirmish? mustn't he skirmish? mustn't we skirmish? mustn't you skirmish? mustn't they skirmish?	mustn't I be skirmishing? mustn't you be skirmishing? mustn't he be skirmishing? mustn't we be skirmishing? mustn't you be skirmishing? mustn't they be skirmishing?
Perfect	V-ing perfect
mustn't I have skirmished? mustn't you have skirmished? mustn't he have skirmished? mustn't we have skirmished? mustn't you have skirmished? mustn't they have skirmished?	mustn't I have been skirmishing? mustn't you have been skirmishing? mustn't he have been skirmishing? mustn't we have been skirmishing? mustn't you have been skirmishing? mustn't they have been skirmishing?