English verb conjugation
MUST IGNITE

Regular verb: ignite - ignited - ignited

Affirmation

Simple form	V-ing form
I must ignite you must ignite he must ignite we must ignite you must ignite they must ignite	I must be igniting you must be igniting he must be igniting we must be igniting you must be igniting they must be igniting
Perfect	V-ing perfect
I must have ignited you must have ignited he must have ignited we must have ignited you must have ignited they must have ignited	I must have been igniting you must have been igniting he must have been igniting we must have been igniting you must have been igniting they must have been igniting

Negation

Simple form	V-ing form
I mustn't ignite you mustn't ignite he mustn't ignite we mustn't ignite you mustn't ignite they mustn't ignite	I mustn't be igniting you mustn't be igniting he mustn't be igniting we mustn't be igniting you mustn't be igniting they mustn't be igniting
Perfect	V-ing perfect
I mustn't have ignited you mustn't have ignited he mustn't have ignited we mustn't have ignited you mustn't have ignited they mustn't have ignited	I mustn't have been igniting you mustn't have been igniting he mustn't have been igniting we mustn't have been igniting you mustn't have been igniting they mustn't have been igniting

Interrogative form

Simple form	V-ing form
must I ignite? must you ignite? must he ignite? must we ignite? must you ignite? must they ignite?	must I be igniting? must you be igniting? must he be igniting? must we be igniting? must you be igniting? must they be igniting?
Perfect	V-ing perfect
must I have ignited? must you have ignited? must he have ignited? must we have ignited? must you have ignited? must they have ignited?	must I have been igniting? must you have been igniting? must he have been igniting? must we have been igniting? must you have been igniting? must they have been igniting?

Interro-negative form

Simple form	V-ing form
mustn't I ignite? mustn't you ignite? mustn't he ignite? mustn't we ignite? mustn't you ignite? mustn't they ignite?	mustn't I be igniting? mustn't you be igniting? mustn't he be igniting? mustn't we be igniting? mustn't you be igniting? mustn't they be igniting?
Perfect	V-ing perfect
mustn't I have ignited? mustn't you have ignited? mustn't he have ignited? mustn't we have ignited? mustn't you have ignited? mustn't they have ignited?	mustn't I have been igniting? mustn't you have been igniting? mustn't he have been igniting? mustn't we have been igniting? mustn't you have been igniting? mustn't they have been igniting?