English verb conjugation
CAN SCUMBLE

Regular verb: scumble - scumbled - scumbled

Affirmation

Simple form	V-ing form
I can scumble you can scumble he can scumble we can scumble you can scumble they can scumble	I can be scumbling you can be scumbling he can be scumbling we can be scumbling you can be scumbling they can be scumbling
Perfect	V-ing perfect
I can have scumbled you can have scumbled he can have scumbled we can have scumbled you can have scumbled they can have scumbled	I can have been scumbling you can have been scumbling he can have been scumbling we can have been scumbling you can have been scumbling they can have been scumbling

Negation

Simple form	V-ing form
I cannot scumble you cannot scumble he cannot scumble we cannot scumble you cannot scumble they cannot scumble	I cannot be scumbling you cannot be scumbling he cannot be scumbling we cannot be scumbling you cannot be scumbling they cannot be scumbling
Perfect	V-ing perfect
I cannot have scumbled you cannot have scumbled he cannot have scumbled we cannot have scumbled you cannot have scumbled they cannot have scumbled	I cannot have been scumbling you cannot have been scumbling he cannot have been scumbling we cannot have been scumbling you cannot have been scumbling they cannot have been scumbling

Interrogative form

Simple form	V-ing form
can I scumble? can you scumble? can he scumble? can we scumble? can you scumble? can they scumble?	can I be scumbling? can you be scumbling? can he be scumbling? can we be scumbling? can you be scumbling? can they be scumbling?
Perfect	V-ing perfect
can I have scumbled? can you have scumbled? can he have scumbled? can we have scumbled? can you have scumbled? can they have scumbled?	can I have been scumbling? can you have been scumbling? can he have been scumbling? can we have been scumbling? can you have been scumbling? can they have been scumbling?

Interro-negative form

Simple form	V-ing form
can I not scumble? can you not scumble? can he not scumble? can we not scumble? can you not scumble? can they not scumble?	can I not be scumbling? can you not be scumbling? can he not be scumbling? can we not be scumbling? can you not be scumbling? can they not be scumbling?
Perfect	V-ing perfect
can I not have scumbled? can you not have scumbled? can he not have scumbled? can we not have scumbled? can you not have scumbled? can they not have scumbled?	can I not have been scumbling? can you not have been scumbling? can he not have been scumbling? can we not have been scumbling? can you not have been scumbling? can they not have been scumbling?