English verb conjugation
CAN RUMBLE

Regular verb: rumble - rumbled - rumbled

Affirmation

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

Negation

Simple form	V-ing form
I can't rumble you can't rumble he can't rumble we can't rumble you can't rumble they can't rumble	I can't be rumbling you can't be rumbling he can't be rumbling we can't be rumbling you can't be rumbling they can't be rumbling
Perfect	V-ing perfect
I can't have rumbled you can't have rumbled he can't have rumbled we can't have rumbled you can't have rumbled they can't have rumbled	I can't have been rumbling you can't have been rumbling he can't have been rumbling we can't have been rumbling you can't have been rumbling they can't have been rumbling

Interrogative form

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

Interro-negative form

Simple form	V-ing form
can't I rumble? can't you rumble? can't he rumble? can't we rumble? can't you rumble? can't they rumble?	can't I be rumbling? can't you be rumbling? can't he be rumbling? can't we be rumbling? can't you be rumbling? can't they be rumbling?
Perfect	V-ing perfect
can't I have rumbled? can't you have rumbled? can't he have rumbled? can't we have rumbled? can't you have rumbled? can't they have rumbled?	can't I have been rumbling? can't you have been rumbling? can't he have been rumbling? can't we have been rumbling? can't you have been rumbling? can't they have been rumbling?