must powwow
Verbo regular: powwow - powwowed- powwowed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must powwow
you must powwow
he must powwow
we must powwow
you must powwow
they must powwow 	I must be powwowing
you must be powwowing
he must be powwowing
we must be powwowing
you must be powwowing
they must be powwowing	I must have powwowed
you must have powwowed
he must have powwowed
we must have powwowed
you must have powwowed
they must have powwowed	I must have been powwowing
you must have been powwowing
he must have been powwowing
we must have been powwowing
you must have been powwowing
they must have been powwowing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not powwow
you must not powwow
he must not powwow
we must not powwow
you must not powwow
they must not powwow 	I must not be powwowing
you must not be powwowing
he must not be powwowing
we must not be powwowing
you must not be powwowing
they must not be powwowing	I must not have powwowed
you must not have powwowed
he must not have powwowed
we must not have powwowed
you must not have powwowed
they must not have powwowed	I must not have been powwowing
you must not have been powwowing
he must not have been powwowing
we must not have been powwowing
you must not have been powwowing
they must not have been powwowing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I powwow?
must you powwow?
must he powwow?
must we powwow?
must you powwow?
must they powwow? 	must I be powwowing?
must you be powwowing?
must he be powwowing?
must we be powwowing?
must you be powwowing?
must they be powwowing? 	must I have powwowed?
must you have powwowed?
must he have powwowed?
must we have powwowed?
must you have powwowed?
must they have powwowed? 	must I have been powwowing?
must you have been powwowing?
must he have been powwowing?
must we have been powwowing?
must you have been powwowing?
must they have been powwowing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not powwow?
must you not powwow?
must he not powwow?
must we not powwow?
must you not powwow?
must they not powwow? 	must I not be powwowing?
must you not be powwowing?
must he not be powwowing?
must we not be powwowing?
must you not be powwowing?
must they not be powwowing? 	must I not have powwowed?
must you not have powwowed?
must he not have powwowed?
must we not have powwowed?
must you not have powwowed?
must they not have powwowed? 	must I not have been powwowing?
must you not have been powwowing?
must he not have been powwowing?
must we not have been powwowing?
must you not have been powwowing?
must they not have been powwowing?