must ignite
Verbo regular: ignite - ignited- ignited

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
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	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	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
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	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	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
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? 	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? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
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? 	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?