English verb conjugation
COULD SPOOF

Regular verb: spoof - spoofed - spoofed

Affirmation

Simple form	V-ing form
I could spoof you could spoof he could spoof we could spoof you could spoof they could spoof	I could be spoofing you could be spoofing he could be spoofing we could be spoofing you could be spoofing they could be spoofing
Perfect	V-ing perfect
I could have spoofed you could have spoofed he could have spoofed we could have spoofed you could have spoofed they could have spoofed	I could have been spoofing you could have been spoofing he could have been spoofing we could have been spoofing you could have been spoofing they could have been spoofing

Negation

Simple form	V-ing form
I couldn't spoof you couldn't spoof he couldn't spoof we couldn't spoof you couldn't spoof they couldn't spoof	I couldn't be spoofing you couldn't be spoofing he couldn't be spoofing we couldn't be spoofing you couldn't be spoofing they couldn't be spoofing
Perfect	V-ing perfect
I couldn't have spoofed you couldn't have spoofed he couldn't have spoofed we couldn't have spoofed you couldn't have spoofed they couldn't have spoofed	I couldn't have been spoofing you couldn't have been spoofing he couldn't have been spoofing we couldn't have been spoofing you couldn't have been spoofing they couldn't have been spoofing

Interrogative form

Simple form	V-ing form
could I spoof? could you spoof? could he spoof? could we spoof? could you spoof? could they spoof?	could I be spoofing? could you be spoofing? could he be spoofing? could we be spoofing? could you be spoofing? could they be spoofing?
Perfect	V-ing perfect
could I have spoofed? could you have spoofed? could he have spoofed? could we have spoofed? could you have spoofed? could they have spoofed?	could I have been spoofing? could you have been spoofing? could he have been spoofing? could we have been spoofing? could you have been spoofing? could they have been spoofing?

Interro-negative form

Simple form	V-ing form
couldn't I spoof? couldn't you spoof? couldn't he spoof? couldn't we spoof? couldn't you spoof? couldn't they spoof?	couldn't I be spoofing? couldn't you be spoofing? couldn't he be spoofing? couldn't we be spoofing? couldn't you be spoofing? couldn't they be spoofing?
Perfect	V-ing perfect
couldn't I have spoofed? couldn't you have spoofed? couldn't he have spoofed? couldn't we have spoofed? couldn't you have spoofed? couldn't they have spoofed?	couldn't I have been spoofing? couldn't you have been spoofing? couldn't he have been spoofing? couldn't we have been spoofing? couldn't you have been spoofing? couldn't they have been spoofing?