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 can't scum you can't scum he can't scum we can't scum you can't scum they can't scum	I can't be scumming you can't be scumming he can't be scumming we can't be scumming you can't be scumming they can't be scumming
Perfect	V-ing perfect
I can't have scummed you can't have scummed he can't have scummed we can't have scummed you can't have scummed they can't have scummed	I can't have been scumming you can't have been scumming he can't have been scumming we can't have been scumming you can't have been scumming they can't 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't I scum? can't you scum? can't he scum? can't we scum? can't you scum? can't they scum?	can't I be scumming? can't you be scumming? can't he be scumming? can't we be scumming? can't you be scumming? can't they be scumming?
Perfect	V-ing perfect
can't I have scummed? can't you have scummed? can't he have scummed? can't we have scummed? can't you have scummed? can't they have scummed?	can't I have been scumming? can't you have been scumming? can't he have been scumming? can't we have been scumming? can't you have been scumming? can't they have been scumming?