English verb conjugation
COULD SCAM

Regular verb: scam - scammed - scammed

Affirmation

Simple form	V-ing form
I could scam you could scam he could scam we could scam you could scam they could scam	I could be scamming you could be scamming he could be scamming we could be scamming you could be scamming they could be scamming
Perfect	V-ing perfect
I could have scammed you could have scammed he could have scammed we could have scammed you could have scammed they could have scammed	I could have been scamming you could have been scamming he could have been scamming we could have been scamming you could have been scamming they could have been scamming

Negation

Simple form	V-ing form
I couldn't scam you couldn't scam he couldn't scam we couldn't scam you couldn't scam they couldn't scam	I couldn't be scamming you couldn't be scamming he couldn't be scamming we couldn't be scamming you couldn't be scamming they couldn't be scamming
Perfect	V-ing perfect
I couldn't have scammed you couldn't have scammed he couldn't have scammed we couldn't have scammed you couldn't have scammed they couldn't have scammed	I couldn't have been scamming you couldn't have been scamming he couldn't have been scamming we couldn't have been scamming you couldn't have been scamming they couldn't have been scamming

Interrogative form

Simple form	V-ing form
could I scam? could you scam? could he scam? could we scam? could you scam? could they scam?	could I be scamming? could you be scamming? could he be scamming? could we be scamming? could you be scamming? could they be scamming?
Perfect	V-ing perfect
could I have scammed? could you have scammed? could he have scammed? could we have scammed? could you have scammed? could they have scammed?	could I have been scamming? could you have been scamming? could he have been scamming? could we have been scamming? could you have been scamming? could they have been scamming?

Interro-negative form

Simple form	V-ing form
couldn't I scam? couldn't you scam? couldn't he scam? couldn't we scam? couldn't you scam? couldn't they scam?	couldn't I be scamming? couldn't you be scamming? couldn't he be scamming? couldn't we be scamming? couldn't you be scamming? couldn't they be scamming?
Perfect	V-ing perfect
couldn't I have scammed? couldn't you have scammed? couldn't he have scammed? couldn't we have scammed? couldn't you have scammed? couldn't they have scammed?	couldn't I have been scamming? couldn't you have been scamming? couldn't he have been scamming? couldn't we have been scamming? couldn't you have been scamming? couldn't they have been scamming?