must desert
Verbo regular: desert - deserted- deserted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must desert
you must desert
he must desert
we must desert
you must desert
they must desert 	I must be deserting
you must be deserting
he must be deserting
we must be deserting
you must be deserting
they must be deserting	I must have deserted
you must have deserted
he must have deserted
we must have deserted
you must have deserted
they must have deserted	I must have been deserting
you must have been deserting
he must have been deserting
we must have been deserting
you must have been deserting
they must have been deserting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not desert
you must not desert
he must not desert
we must not desert
you must not desert
they must not desert 	I must not be deserting
you must not be deserting
he must not be deserting
we must not be deserting
you must not be deserting
they must not be deserting	I must not have deserted
you must not have deserted
he must not have deserted
we must not have deserted
you must not have deserted
they must not have deserted	I must not have been deserting
you must not have been deserting
he must not have been deserting
we must not have been deserting
you must not have been deserting
they must not have been deserting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I desert?
must you desert?
must he desert?
must we desert?
must you desert?
must they desert? 	must I be deserting?
must you be deserting?
must he be deserting?
must we be deserting?
must you be deserting?
must they be deserting? 	must I have deserted?
must you have deserted?
must he have deserted?
must we have deserted?
must you have deserted?
must they have deserted? 	must I have been deserting?
must you have been deserting?
must he have been deserting?
must we have been deserting?
must you have been deserting?
must they have been deserting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not desert?
must you not desert?
must he not desert?
must we not desert?
must you not desert?
must they not desert? 	must I not be deserting?
must you not be deserting?
must he not be deserting?
must we not be deserting?
must you not be deserting?
must they not be deserting? 	must I not have deserted?
must you not have deserted?
must he not have deserted?
must we not have deserted?
must you not have deserted?
must they not have deserted? 	must I not have been deserting?
must you not have been deserting?
must he not have been deserting?
must we not have been deserting?
must you not have been deserting?
must they not have been deserting?