may grub
Verbo regular: grub - grubbed- grubbed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may grub
you may grub
he may grub
we may grub
you may grub
they may grub 	I may be grubbing
you may be grubbing
he may be grubbing
we may be grubbing
you may be grubbing
they may be grubbing	I may have grubbed
you may have grubbed
he may have grubbed
we may have grubbed
you may have grubbed
they may have grubbed	I may have been grubbing
you may have been grubbing
he may have been grubbing
we may have been grubbing
you may have been grubbing
they may have been grubbing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may not grub
you may not grub
he may not grub
we may not grub
you may not grub
they may not grub 	I may not be grubbing
you may not be grubbing
he may not be grubbing
we may not be grubbing
you may not be grubbing
they may not be grubbing	I may not have grubbed
you may not have grubbed
he may not have grubbed
we may not have grubbed
you may not have grubbed
they may not have grubbed	I may not have been grubbing
you may not have been grubbing
he may not have been grubbing
we may not have been grubbing
you may not have been grubbing
they may not have been grubbing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I grub?
may you grub?
may he grub?
may we grub?
may you grub?
may they grub? 	may I be grubbing?
may you be grubbing?
may he be grubbing?
may we be grubbing?
may you be grubbing?
may they be grubbing? 	may I have grubbed?
may you have grubbed?
may he have grubbed?
may we have grubbed?
may you have grubbed?
may they have grubbed? 	may I have been grubbing?
may you have been grubbing?
may he have been grubbing?
may we have been grubbing?
may you have been grubbing?
may they have been grubbing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I not grub?
may you not grub?
may he not grub?
may we not grub?
may you not grub?
may they not grub? 	may I not be grubbing?
may you not be grubbing?
may he not be grubbing?
may we not be grubbing?
may you not be grubbing?
may they not be grubbing? 	may I not have grubbed?
may you not have grubbed?
may he not have grubbed?
may we not have grubbed?
may you not have grubbed?
may they not have grubbed? 	may I not have been grubbing?
may you not have been grubbing?
may he not have been grubbing?
may we not have been grubbing?
may you not have been grubbing?
may they not have been grubbing?