may subtract
Verbo regular: subtract - subtracted- subtracted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may subtract
you may subtract
he may subtract
we may subtract
you may subtract
they may subtract 	I may be subtracting
you may be subtracting
he may be subtracting
we may be subtracting
you may be subtracting
they may be subtracting	I may have subtracted
you may have subtracted
he may have subtracted
we may have subtracted
you may have subtracted
they may have subtracted	I may have been subtracting
you may have been subtracting
he may have been subtracting
we may have been subtracting
you may have been subtracting
they may have been subtracting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may not subtract
you may not subtract
he may not subtract
we may not subtract
you may not subtract
they may not subtract 	I may not be subtracting
you may not be subtracting
he may not be subtracting
we may not be subtracting
you may not be subtracting
they may not be subtracting	I may not have subtracted
you may not have subtracted
he may not have subtracted
we may not have subtracted
you may not have subtracted
they may not have subtracted	I may not have been subtracting
you may not have been subtracting
he may not have been subtracting
we may not have been subtracting
you may not have been subtracting
they may not have been subtracting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I subtract?
may you subtract?
may he subtract?
may we subtract?
may you subtract?
may they subtract? 	may I be subtracting?
may you be subtracting?
may he be subtracting?
may we be subtracting?
may you be subtracting?
may they be subtracting? 	may I have subtracted?
may you have subtracted?
may he have subtracted?
may we have subtracted?
may you have subtracted?
may they have subtracted? 	may I have been subtracting?
may you have been subtracting?
may he have been subtracting?
may we have been subtracting?
may you have been subtracting?
may they have been subtracting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I not subtract?
may you not subtract?
may he not subtract?
may we not subtract?
may you not subtract?
may they not subtract? 	may I not be subtracting?
may you not be subtracting?
may he not be subtracting?
may we not be subtracting?
may you not be subtracting?
may they not be subtracting? 	may I not have subtracted?
may you not have subtracted?
may he not have subtracted?
may we not have subtracted?
may you not have subtracted?
may they not have subtracted? 	may I not have been subtracting?
may you not have been subtracting?
may he not have been subtracting?
may we not have been subtracting?
may you not have been subtracting?
may they not have been subtracting?