must overtax
Verbo regular: overtax - overtaxed- overtaxed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must overtax
you must overtax
he must overtax
we must overtax
you must overtax
they must overtax 	I must be overtaxing
you must be overtaxing
he must be overtaxing
we must be overtaxing
you must be overtaxing
they must be overtaxing	I must have overtaxed
you must have overtaxed
he must have overtaxed
we must have overtaxed
you must have overtaxed
they must have overtaxed	I must have been overtaxing
you must have been overtaxing
he must have been overtaxing
we must have been overtaxing
you must have been overtaxing
they must have been overtaxing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not overtax
you must not overtax
he must not overtax
we must not overtax
you must not overtax
they must not overtax 	I must not be overtaxing
you must not be overtaxing
he must not be overtaxing
we must not be overtaxing
you must not be overtaxing
they must not be overtaxing	I must not have overtaxed
you must not have overtaxed
he must not have overtaxed
we must not have overtaxed
you must not have overtaxed
they must not have overtaxed	I must not have been overtaxing
you must not have been overtaxing
he must not have been overtaxing
we must not have been overtaxing
you must not have been overtaxing
they must not have been overtaxing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I overtax?
must you overtax?
must he overtax?
must we overtax?
must you overtax?
must they overtax? 	must I be overtaxing?
must you be overtaxing?
must he be overtaxing?
must we be overtaxing?
must you be overtaxing?
must they be overtaxing? 	must I have overtaxed?
must you have overtaxed?
must he have overtaxed?
must we have overtaxed?
must you have overtaxed?
must they have overtaxed? 	must I have been overtaxing?
must you have been overtaxing?
must he have been overtaxing?
must we have been overtaxing?
must you have been overtaxing?
must they have been overtaxing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not overtax?
must you not overtax?
must he not overtax?
must we not overtax?
must you not overtax?
must they not overtax? 	must I not be overtaxing?
must you not be overtaxing?
must he not be overtaxing?
must we not be overtaxing?
must you not be overtaxing?
must they not be overtaxing? 	must I not have overtaxed?
must you not have overtaxed?
must he not have overtaxed?
must we not have overtaxed?
must you not have overtaxed?
must they not have overtaxed? 	must I not have been overtaxing?
must you not have been overtaxing?
must he not have been overtaxing?
must we not have been overtaxing?
must you not have been overtaxing?
must they not have been overtaxing?