English verb conjugation
MAY ROOF

Regular verb: roof - roofed - roofed

Affirmation

Simple form	V-ing form
I may roof you may roof he may roof we may roof you may roof they may roof	I may be roofing you may be roofing he may be roofing we may be roofing you may be roofing they may be roofing
Perfect	V-ing perfect
I may have roofed you may have roofed he may have roofed we may have roofed you may have roofed they may have roofed	I may have been roofing you may have been roofing he may have been roofing we may have been roofing you may have been roofing they may have been roofing

Negation

Simple form	V-ing form
I may not roof you may not roof he may not roof we may not roof you may not roof they may not roof	I may not be roofing you may not be roofing he may not be roofing we may not be roofing you may not be roofing they may not be roofing
Perfect	V-ing perfect
I may not have roofed you may not have roofed he may not have roofed we may not have roofed you may not have roofed they may not have roofed	I may not have been roofing you may not have been roofing he may not have been roofing we may not have been roofing you may not have been roofing they may not have been roofing

Interrogative form

Simple form	V-ing form
may I roof? may you roof? may he roof? may we roof? may you roof? may they roof?	may I be roofing? may you be roofing? may he be roofing? may we be roofing? may you be roofing? may they be roofing?
Perfect	V-ing perfect
may I have roofed? may you have roofed? may he have roofed? may we have roofed? may you have roofed? may they have roofed?	may I have been roofing? may you have been roofing? may he have been roofing? may we have been roofing? may you have been roofing? may they have been roofing?

Interro-negative form

Simple form	V-ing form
may I not roof? may you not roof? may he not roof? may we not roof? may you not roof? may they not roof?	may I not be roofing? may you not be roofing? may he not be roofing? may we not be roofing? may you not be roofing? may they not be roofing?
Perfect	V-ing perfect
may I not have roofed? may you not have roofed? may he not have roofed? may we not have roofed? may you not have roofed? may they not have roofed?	may I not have been roofing? may you not have been roofing? may he not have been roofing? may we not have been roofing? may you not have been roofing? may they not have been roofing?