must incur
Verbo regular: incur - incurred- incurred

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must incur
you must incur
he must incur
we must incur
you must incur
they must incur 	I must be incurring
you must be incurring
he must be incurring
we must be incurring
you must be incurring
they must be incurring	I must have incurred
you must have incurred
he must have incurred
we must have incurred
you must have incurred
they must have incurred	I must have been incurring
you must have been incurring
he must have been incurring
we must have been incurring
you must have been incurring
they must have been incurring	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not incur
you must not incur
he must not incur
we must not incur
you must not incur
they must not incur 	I must not be incurring
you must not be incurring
he must not be incurring
we must not be incurring
you must not be incurring
they must not be incurring	I must not have incurred
you must not have incurred
he must not have incurred
we must not have incurred
you must not have incurred
they must not have incurred	I must not have been incurring
you must not have been incurring
he must not have been incurring
we must not have been incurring
you must not have been incurring
they must not have been incurring	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I incur?
must you incur?
must he incur?
must we incur?
must you incur?
must they incur? 	must I be incurring?
must you be incurring?
must he be incurring?
must we be incurring?
must you be incurring?
must they be incurring? 	must I have incurred?
must you have incurred?
must he have incurred?
must we have incurred?
must you have incurred?
must they have incurred? 	must I have been incurring?
must you have been incurring?
must he have been incurring?
must we have been incurring?
must you have been incurring?
must they have been incurring? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not incur?
must you not incur?
must he not incur?
must we not incur?
must you not incur?
must they not incur? 	must I not be incurring?
must you not be incurring?
must he not be incurring?
must we not be incurring?
must you not be incurring?
must they not be incurring? 	must I not have incurred?
must you not have incurred?
must he not have incurred?
must we not have incurred?
must you not have incurred?
must they not have incurred? 	must I not have been incurring?
must you not have been incurring?
must he not have been incurring?
must we not have been incurring?
must you not have been incurring?
must they not have been incurring?