English verb conjugation
CAN GOOF

Regular verb: goof - goofed - goofed

Affirmation

Simple form	V-ing form
I can goof you can goof she can goof we can goof you can goof they can goof	I can be goofing you can be goofing she can be goofing we can be goofing you can be goofing they can be goofing
Perfect	V-ing perfect
I can have goofed you can have goofed she can have goofed we can have goofed you can have goofed they can have goofed	I can have been goofing you can have been goofing she can have been goofing we can have been goofing you can have been goofing they can have been goofing

Negation

Simple form	V-ing form
I can't goof you can't goof she can't goof we can't goof you can't goof they can't goof	I can't be goofing you can't be goofing she can't be goofing we can't be goofing you can't be goofing they can't be goofing
Perfect	V-ing perfect
I can't have goofed you can't have goofed she can't have goofed we can't have goofed you can't have goofed they can't have goofed	I can't have been goofing you can't have been goofing she can't have been goofing we can't have been goofing you can't have been goofing they can't have been goofing

Interrogative form

Simple form	V-ing form
can I goof? can you goof? can she goof? can we goof? can you goof? can they goof?	can I be goofing? can you be goofing? can she be goofing? can we be goofing? can you be goofing? can they be goofing?
Perfect	V-ing perfect
can I have goofed? can you have goofed? can she have goofed? can we have goofed? can you have goofed? can they have goofed?	can I have been goofing? can you have been goofing? can she have been goofing? can we have been goofing? can you have been goofing? can they have been goofing?

Interro-negative form

Simple form	V-ing form
can't I goof? can't you goof? can't she goof? can't we goof? can't you goof? can't they goof?	can't I be goofing? can't you be goofing? can't she be goofing? can't we be goofing? can't you be goofing? can't they be goofing?
Perfect	V-ing perfect
can't I have goofed? can't you have goofed? can't she have goofed? can't we have goofed? can't you have goofed? can't they have goofed?	can't I have been goofing? can't you have been goofing? can't she have been goofing? can't we have been goofing? can't you have been goofing? can't they have been goofing?