English verb conjugation
MAY RUMBLE

Regular verb: rumble - rumbled - rumbled

Affirmation

Simple form	V-ing form
I may rumble you may rumble he may rumble we may rumble you may rumble they may rumble	I may be rumbling you may be rumbling he may be rumbling we may be rumbling you may be rumbling they may be rumbling
Perfect	V-ing perfect
I may have rumbled you may have rumbled he may have rumbled we may have rumbled you may have rumbled they may have rumbled	I may have been rumbling you may have been rumbling he may have been rumbling we may have been rumbling you may have been rumbling they may have been rumbling

Negation

Simple form	V-ing form
I may not rumble you may not rumble he may not rumble we may not rumble you may not rumble they may not rumble	I may not be rumbling you may not be rumbling he may not be rumbling we may not be rumbling you may not be rumbling they may not be rumbling
Perfect	V-ing perfect
I may not have rumbled you may not have rumbled he may not have rumbled we may not have rumbled you may not have rumbled they may not have rumbled	I may not have been rumbling you may not have been rumbling he may not have been rumbling we may not have been rumbling you may not have been rumbling they may not have been rumbling

Interrogative form

Simple form	V-ing form
may I rumble? may you rumble? may he rumble? may we rumble? may you rumble? may they rumble?	may I be rumbling? may you be rumbling? may he be rumbling? may we be rumbling? may you be rumbling? may they be rumbling?
Perfect	V-ing perfect
may I have rumbled? may you have rumbled? may he have rumbled? may we have rumbled? may you have rumbled? may they have rumbled?	may I have been rumbling? may you have been rumbling? may he have been rumbling? may we have been rumbling? may you have been rumbling? may they have been rumbling?

Interro-negative form

Simple form	V-ing form
may I not rumble? may you not rumble? may he not rumble? may we not rumble? may you not rumble? may they not rumble?	may I not be rumbling? may you not be rumbling? may he not be rumbling? may we not be rumbling? may you not be rumbling? may they not be rumbling?
Perfect	V-ing perfect
may I not have rumbled? may you not have rumbled? may he not have rumbled? may we not have rumbled? may you not have rumbled? may they not have rumbled?	may I not have been rumbling? may you not have been rumbling? may he not have been rumbling? may we not have been rumbling? may you not have been rumbling? may they not have been rumbling?