may grain
Verbo regular: grain - grained- grained

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may grain
you may grain
she may grain
we may grain
you may grain
they may grain 	I may be graining
you may be graining
she may be graining
we may be graining
you may be graining
they may be graining	I may have grained
you may have grained
she may have grained
we may have grained
you may have grained
they may have grained	I may have been graining
you may have been graining
she may have been graining
we may have been graining
you may have been graining
they may have been graining	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may not grain
you may not grain
she may not grain
we may not grain
you may not grain
they may not grain 	I may not be graining
you may not be graining
she may not be graining
we may not be graining
you may not be graining
they may not be graining	I may not have grained
you may not have grained
she may not have grained
we may not have grained
you may not have grained
they may not have grained	I may not have been graining
you may not have been graining
she may not have been graining
we may not have been graining
you may not have been graining
they may not have been graining	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I grain?
may you grain?
may she grain?
may we grain?
may you grain?
may they grain? 	may I be graining?
may you be graining?
may she be graining?
may we be graining?
may you be graining?
may they be graining? 	may I have grained?
may you have grained?
may she have grained?
may we have grained?
may you have grained?
may they have grained? 	may I have been graining?
may you have been graining?
may she have been graining?
may we have been graining?
may you have been graining?
may they have been graining? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I not grain?
may you not grain?
may she not grain?
may we not grain?
may you not grain?
may they not grain? 	may I not be graining?
may you not be graining?
may she not be graining?
may we not be graining?
may you not be graining?
may they not be graining? 	may I not have grained?
may you not have grained?
may she not have grained?
may we not have grained?
may you not have grained?
may they not have grained? 	may I not have been graining?
may you not have been graining?
may she not have been graining?
may we not have been graining?
may you not have been graining?
may they not have been graining?