must commemorate
Verbo regular: commemorate - commemorated- commemorated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must commemorate
you must commemorate
he must commemorate
we must commemorate
you must commemorate
they must commemorate 	I must be commemorating
you must be commemorating
he must be commemorating
we must be commemorating
you must be commemorating
they must be commemorating	I must have commemorated
you must have commemorated
he must have commemorated
we must have commemorated
you must have commemorated
they must have commemorated	I must have been commemorating
you must have been commemorating
he must have been commemorating
we must have been commemorating
you must have been commemorating
they must have been commemorating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't commemorate
you mustn't commemorate
he mustn't commemorate
we mustn't commemorate
you mustn't commemorate
they mustn't commemorate 	I mustn't be commemorating
you mustn't be commemorating
he mustn't be commemorating
we mustn't be commemorating
you mustn't be commemorating
they mustn't be commemorating	I mustn't have commemorated
you mustn't have commemorated
he mustn't have commemorated
we mustn't have commemorated
you mustn't have commemorated
they mustn't have commemorated	I mustn't have been commemorating
you mustn't have been commemorating
he mustn't have been commemorating
we mustn't have been commemorating
you mustn't have been commemorating
they mustn't have been commemorating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I commemorate?
must you commemorate?
must he commemorate?
must we commemorate?
must you commemorate?
must they commemorate? 	must I be commemorating?
must you be commemorating?
must he be commemorating?
must we be commemorating?
must you be commemorating?
must they be commemorating? 	must I have commemorated?
must you have commemorated?
must he have commemorated?
must we have commemorated?
must you have commemorated?
must they have commemorated? 	must I have been commemorating?
must you have been commemorating?
must he have been commemorating?
must we have been commemorating?
must you have been commemorating?
must they have been commemorating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I commemorate?
mustn't you commemorate?
mustn't he commemorate?
mustn't we commemorate?
mustn't you commemorate?
mustn't they commemorate? 	mustn't I be commemorating?
mustn't you be commemorating?
mustn't he be commemorating?
mustn't we be commemorating?
mustn't you be commemorating?
mustn't they be commemorating? 	mustn't I have commemorated?
mustn't you have commemorated?
mustn't he have commemorated?
mustn't we have commemorated?
mustn't you have commemorated?
mustn't they have commemorated? 	mustn't I have been commemorating?
mustn't you have been commemorating?
mustn't he have been commemorating?
mustn't we have been commemorating?
mustn't you have been commemorating?
mustn't they have been commemorating?