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 can't scumble you can't scumble he can't scumble we can't scumble you can't scumble they can't scumble	I can't be scumbling you can't be scumbling he can't be scumbling we can't be scumbling you can't be scumbling they can't be scumbling
Perfect	V-ing perfect
I can't have scumbled you can't have scumbled he can't have scumbled we can't have scumbled you can't have scumbled they can't have scumbled	I can't have been scumbling you can't have been scumbling he can't have been scumbling we can't have been scumbling you can't have been scumbling they can't 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't I scumble? can't you scumble? can't he scumble? can't we scumble? can't you scumble? can't they scumble?	can't I be scumbling? can't you be scumbling? can't he be scumbling? can't we be scumbling? can't you be scumbling? can't they be scumbling?
Perfect	V-ing perfect
can't I have scumbled? can't you have scumbled? can't he have scumbled? can't we have scumbled? can't you have scumbled? can't they have scumbled?	can't I have been scumbling? can't you have been scumbling? can't he have been scumbling? can't we have been scumbling? can't you have been scumbling? can't they have been scumbling?