English verb conjugation
CAN SCUM

Regular verb: scum - scummed - scummed

Affirmation

Simple form	V-ing form
I can scum you can scum he can scum we can scum you can scum they can scum	I can be scumming you can be scumming he can be scumming we can be scumming you can be scumming they can be scumming
Perfect	V-ing perfect
I can have scummed you can have scummed he can have scummed we can have scummed you can have scummed they can have scummed	I can have been scumming you can have been scumming he can have been scumming we can have been scumming you can have been scumming they can have been scumming

Negation

Simple form	V-ing form
I cannot scum you cannot scum he cannot scum we cannot scum you cannot scum they cannot scum	I cannot be scumming you cannot be scumming he cannot be scumming we cannot be scumming you cannot be scumming they cannot be scumming
Perfect	V-ing perfect
I cannot have scummed you cannot have scummed he cannot have scummed we cannot have scummed you cannot have scummed they cannot have scummed	I cannot have been scumming you cannot have been scumming he cannot have been scumming we cannot have been scumming you cannot have been scumming they cannot have been scumming

Interrogative form

Simple form	V-ing form
can I scum? can you scum? can he scum? can we scum? can you scum? can they scum?	can I be scumming? can you be scumming? can he be scumming? can we be scumming? can you be scumming? can they be scumming?
Perfect	V-ing perfect
can I have scummed? can you have scummed? can he have scummed? can we have scummed? can you have scummed? can they have scummed?	can I have been scumming? can you have been scumming? can he have been scumming? can we have been scumming? can you have been scumming? can they have been scumming?

Interro-negative form

Simple form	V-ing form
can I not scum? can you not scum? can he not scum? can we not scum? can you not scum? can they not scum?	can I not be scumming? can you not be scumming? can he not be scumming? can we not be scumming? can you not be scumming? can they not be scumming?
Perfect	V-ing perfect
can I not have scummed? can you not have scummed? can he not have scummed? can we not have scummed? can you not have scummed? can they not have scummed?	can I not have been scumming? can you not have been scumming? can he not have been scumming? can we not have been scumming? can you not have been scumming? can they not have been scumming?