may mass
Verbo regular: mass - massed- massed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may mass
you may mass
she may mass
we may mass
you may mass
they may mass 	I may be massing
you may be massing
she may be massing
we may be massing
you may be massing
they may be massing	I may have massed
you may have massed
she may have massed
we may have massed
you may have massed
they may have massed	I may have been massing
you may have been massing
she may have been massing
we may have been massing
you may have been massing
they may have been massing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may not mass
you may not mass
she may not mass
we may not mass
you may not mass
they may not mass 	I may not be massing
you may not be massing
she may not be massing
we may not be massing
you may not be massing
they may not be massing	I may not have massed
you may not have massed
she may not have massed
we may not have massed
you may not have massed
they may not have massed	I may not have been massing
you may not have been massing
she may not have been massing
we may not have been massing
you may not have been massing
they may not have been massing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I mass?
may you mass?
may she mass?
may we mass?
may you mass?
may they mass? 	may I be massing?
may you be massing?
may she be massing?
may we be massing?
may you be massing?
may they be massing? 	may I have massed?
may you have massed?
may she have massed?
may we have massed?
may you have massed?
may they have massed? 	may I have been massing?
may you have been massing?
may she have been massing?
may we have been massing?
may you have been massing?
may they have been massing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I not mass?
may you not mass?
may she not mass?
may we not mass?
may you not mass?
may they not mass? 	may I not be massing?
may you not be massing?
may she not be massing?
may we not be massing?
may you not be massing?
may they not be massing? 	may I not have massed?
may you not have massed?
may she not have massed?
may we not have massed?
may you not have massed?
may they not have massed? 	may I not have been massing?
may you not have been massing?
may she not have been massing?
may we not have been massing?
may you not have been massing?
may they not have been massing?