must twit
Verbo regular: twit - twitted- twitted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must twit
you must twit
he must twit
we must twit
you must twit
they must twit 	I must be twitting
you must be twitting
he must be twitting
we must be twitting
you must be twitting
they must be twitting	I must have twitted
you must have twitted
he must have twitted
we must have twitted
you must have twitted
they must have twitted	I must have been twitting
you must have been twitting
he must have been twitting
we must have been twitting
you must have been twitting
they must have been twitting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not twit
you must not twit
he must not twit
we must not twit
you must not twit
they must not twit 	I must not be twitting
you must not be twitting
he must not be twitting
we must not be twitting
you must not be twitting
they must not be twitting	I must not have twitted
you must not have twitted
he must not have twitted
we must not have twitted
you must not have twitted
they must not have twitted	I must not have been twitting
you must not have been twitting
he must not have been twitting
we must not have been twitting
you must not have been twitting
they must not have been twitting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I twit?
must you twit?
must he twit?
must we twit?
must you twit?
must they twit? 	must I be twitting?
must you be twitting?
must he be twitting?
must we be twitting?
must you be twitting?
must they be twitting? 	must I have twitted?
must you have twitted?
must he have twitted?
must we have twitted?
must you have twitted?
must they have twitted? 	must I have been twitting?
must you have been twitting?
must he have been twitting?
must we have been twitting?
must you have been twitting?
must they have been twitting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not twit?
must you not twit?
must he not twit?
must we not twit?
must you not twit?
must they not twit? 	must I not be twitting?
must you not be twitting?
must he not be twitting?
must we not be twitting?
must you not be twitting?
must they not be twitting? 	must I not have twitted?
must you not have twitted?
must he not have twitted?
must we not have twitted?
must you not have twitted?
must they not have twitted? 	must I not have been twitting?
must you not have been twitting?
must he not have been twitting?
must we not have been twitting?
must you not have been twitting?
must they not have been twitting?