must lament
Verbo regular: lament - lamented- lamented

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must lament
you must lament
he must lament
we must lament
you must lament
they must lament 	I must be lamenting
you must be lamenting
he must be lamenting
we must be lamenting
you must be lamenting
they must be lamenting	I must have lamented
you must have lamented
he must have lamented
we must have lamented
you must have lamented
they must have lamented	I must have been lamenting
you must have been lamenting
he must have been lamenting
we must have been lamenting
you must have been lamenting
they must have been lamenting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not lament
you must not lament
he must not lament
we must not lament
you must not lament
they must not lament 	I must not be lamenting
you must not be lamenting
he must not be lamenting
we must not be lamenting
you must not be lamenting
they must not be lamenting	I must not have lamented
you must not have lamented
he must not have lamented
we must not have lamented
you must not have lamented
they must not have lamented	I must not have been lamenting
you must not have been lamenting
he must not have been lamenting
we must not have been lamenting
you must not have been lamenting
they must not have been lamenting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I lament?
must you lament?
must he lament?
must we lament?
must you lament?
must they lament? 	must I be lamenting?
must you be lamenting?
must he be lamenting?
must we be lamenting?
must you be lamenting?
must they be lamenting? 	must I have lamented?
must you have lamented?
must he have lamented?
must we have lamented?
must you have lamented?
must they have lamented? 	must I have been lamenting?
must you have been lamenting?
must he have been lamenting?
must we have been lamenting?
must you have been lamenting?
must they have been lamenting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not lament?
must you not lament?
must he not lament?
must we not lament?
must you not lament?
must they not lament? 	must I not be lamenting?
must you not be lamenting?
must he not be lamenting?
must we not be lamenting?
must you not be lamenting?
must they not be lamenting? 	must I not have lamented?
must you not have lamented?
must he not have lamented?
must we not have lamented?
must you not have lamented?
must they not have lamented? 	must I not have been lamenting?
must you not have been lamenting?
must he not have been lamenting?
must we not have been lamenting?
must you not have been lamenting?
must they not have been lamenting?