must throb
Verbo regular: throb - throbbed- throbbed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must throb
you must throb
he must throb
we must throb
you must throb
they must throb 	I must be throbbing
you must be throbbing
he must be throbbing
we must be throbbing
you must be throbbing
they must be throbbing	I must have throbbed
you must have throbbed
he must have throbbed
we must have throbbed
you must have throbbed
they must have throbbed	I must have been throbbing
you must have been throbbing
he must have been throbbing
we must have been throbbing
you must have been throbbing
they must have been throbbing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't throb
you mustn't throb
he mustn't throb
we mustn't throb
you mustn't throb
they mustn't throb 	I mustn't be throbbing
you mustn't be throbbing
he mustn't be throbbing
we mustn't be throbbing
you mustn't be throbbing
they mustn't be throbbing	I mustn't have throbbed
you mustn't have throbbed
he mustn't have throbbed
we mustn't have throbbed
you mustn't have throbbed
they mustn't have throbbed	I mustn't have been throbbing
you mustn't have been throbbing
he mustn't have been throbbing
we mustn't have been throbbing
you mustn't have been throbbing
they mustn't have been throbbing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I throb?
must you throb?
must he throb?
must we throb?
must you throb?
must they throb? 	must I be throbbing?
must you be throbbing?
must he be throbbing?
must we be throbbing?
must you be throbbing?
must they be throbbing? 	must I have throbbed?
must you have throbbed?
must he have throbbed?
must we have throbbed?
must you have throbbed?
must they have throbbed? 	must I have been throbbing?
must you have been throbbing?
must he have been throbbing?
must we have been throbbing?
must you have been throbbing?
must they have been throbbing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I throb?
mustn't you throb?
mustn't he throb?
mustn't we throb?
mustn't you throb?
mustn't they throb? 	mustn't I be throbbing?
mustn't you be throbbing?
mustn't he be throbbing?
mustn't we be throbbing?
mustn't you be throbbing?
mustn't they be throbbing? 	mustn't I have throbbed?
mustn't you have throbbed?
mustn't he have throbbed?
mustn't we have throbbed?
mustn't you have throbbed?
mustn't they have throbbed? 	mustn't I have been throbbing?
mustn't you have been throbbing?
mustn't he have been throbbing?
mustn't we have been throbbing?
mustn't you have been throbbing?
mustn't they have been throbbing?