may grumble
Verbo regular: grumble - grumbled- grumbled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may grumble
you may grumble
he may grumble
we may grumble
you may grumble
they may grumble 	I may be grumbling
you may be grumbling
he may be grumbling
we may be grumbling
you may be grumbling
they may be grumbling	I may have grumbled
you may have grumbled
he may have grumbled
we may have grumbled
you may have grumbled
they may have grumbled	I may have been grumbling
you may have been grumbling
he may have been grumbling
we may have been grumbling
you may have been grumbling
they may have been grumbling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mayn't grumble
you mayn't grumble
he mayn't grumble
we mayn't grumble
you mayn't grumble
they mayn't grumble 	I mayn't be grumbling
you mayn't be grumbling
he mayn't be grumbling
we mayn't be grumbling
you mayn't be grumbling
they mayn't be grumbling	I mayn't have grumbled
you mayn't have grumbled
he mayn't have grumbled
we mayn't have grumbled
you mayn't have grumbled
they mayn't have grumbled	I mayn't have been grumbling
you mayn't have been grumbling
he mayn't have been grumbling
we mayn't have been grumbling
you mayn't have been grumbling
they mayn't have been grumbling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I grumble?
may you grumble?
may he grumble?
may we grumble?
may you grumble?
may they grumble? 	may I be grumbling?
may you be grumbling?
may he be grumbling?
may we be grumbling?
may you be grumbling?
may they be grumbling? 	may I have grumbled?
may you have grumbled?
may he have grumbled?
may we have grumbled?
may you have grumbled?
may they have grumbled? 	may I have been grumbling?
may you have been grumbling?
may he have been grumbling?
may we have been grumbling?
may you have been grumbling?
may they have been grumbling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mayn't I grumble?
mayn't you grumble?
mayn't he grumble?
mayn't we grumble?
mayn't you grumble?
mayn't they grumble? 	mayn't I be grumbling?
mayn't you be grumbling?
mayn't he be grumbling?
mayn't we be grumbling?
mayn't you be grumbling?
mayn't they be grumbling? 	mayn't I have grumbled?
mayn't you have grumbled?
mayn't he have grumbled?
mayn't we have grumbled?
mayn't you have grumbled?
mayn't they have grumbled? 	mayn't I have been grumbling?
mayn't you have been grumbling?
mayn't he have been grumbling?
mayn't we have been grumbling?
mayn't you have been grumbling?
mayn't they have been grumbling?