may decrease
Verbo regular: decrease - decreased- decreased

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may decrease
you may decrease
he may decrease
we may decrease
you may decrease
they may decrease 	I may be decreasing
you may be decreasing
he may be decreasing
we may be decreasing
you may be decreasing
they may be decreasing	I may have decreased
you may have decreased
he may have decreased
we may have decreased
you may have decreased
they may have decreased	I may have been decreasing
you may have been decreasing
he may have been decreasing
we may have been decreasing
you may have been decreasing
they may have been decreasing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mayn't decrease
you mayn't decrease
he mayn't decrease
we mayn't decrease
you mayn't decrease
they mayn't decrease 	I mayn't be decreasing
you mayn't be decreasing
he mayn't be decreasing
we mayn't be decreasing
you mayn't be decreasing
they mayn't be decreasing	I mayn't have decreased
you mayn't have decreased
he mayn't have decreased
we mayn't have decreased
you mayn't have decreased
they mayn't have decreased	I mayn't have been decreasing
you mayn't have been decreasing
he mayn't have been decreasing
we mayn't have been decreasing
you mayn't have been decreasing
they mayn't have been decreasing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I decrease?
may you decrease?
may he decrease?
may we decrease?
may you decrease?
may they decrease? 	may I be decreasing?
may you be decreasing?
may he be decreasing?
may we be decreasing?
may you be decreasing?
may they be decreasing? 	may I have decreased?
may you have decreased?
may he have decreased?
may we have decreased?
may you have decreased?
may they have decreased? 	may I have been decreasing?
may you have been decreasing?
may he have been decreasing?
may we have been decreasing?
may you have been decreasing?
may they have been decreasing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mayn't I decrease?
mayn't you decrease?
mayn't he decrease?
mayn't we decrease?
mayn't you decrease?
mayn't they decrease? 	mayn't I be decreasing?
mayn't you be decreasing?
mayn't he be decreasing?
mayn't we be decreasing?
mayn't you be decreasing?
mayn't they be decreasing? 	mayn't I have decreased?
mayn't you have decreased?
mayn't he have decreased?
mayn't we have decreased?
mayn't you have decreased?
mayn't they have decreased? 	mayn't I have been decreasing?
mayn't you have been decreasing?
mayn't he have been decreasing?
mayn't we have been decreasing?
mayn't you have been decreasing?
mayn't they have been decreasing?