English verb conjugation
MUST WOOF

Regular verb: woof - woofed - woofed

Affirmation

Simple form	V-ing form
I must woof you must woof he must woof we must woof you must woof they must woof	I must be woofing you must be woofing he must be woofing we must be woofing you must be woofing they must be woofing
Perfect	V-ing perfect
I must have woofed you must have woofed he must have woofed we must have woofed you must have woofed they must have woofed	I must have been woofing you must have been woofing he must have been woofing we must have been woofing you must have been woofing they must have been woofing

Negation

Simple form	V-ing form
I must not woof you must not woof he must not woof we must not woof you must not woof they must not woof	I must not be woofing you must not be woofing he must not be woofing we must not be woofing you must not be woofing they must not be woofing
Perfect	V-ing perfect
I must not have woofed you must not have woofed he must not have woofed we must not have woofed you must not have woofed they must not have woofed	I must not have been woofing you must not have been woofing he must not have been woofing we must not have been woofing you must not have been woofing they must not have been woofing

Interrogative form

Simple form	V-ing form
must I woof? must you woof? must he woof? must we woof? must you woof? must they woof?	must I be woofing? must you be woofing? must he be woofing? must we be woofing? must you be woofing? must they be woofing?
Perfect	V-ing perfect
must I have woofed? must you have woofed? must he have woofed? must we have woofed? must you have woofed? must they have woofed?	must I have been woofing? must you have been woofing? must he have been woofing? must we have been woofing? must you have been woofing? must they have been woofing?

Interro-negative form

Simple form	V-ing form
must I not woof? must you not woof? must he not woof? must we not woof? must you not woof? must they not woof?	must I not be woofing? must you not be woofing? must he not be woofing? must we not be woofing? must you not be woofing? must they not be woofing?
Perfect	V-ing perfect
must I not have woofed? must you not have woofed? must he not have woofed? must we not have woofed? must you not have woofed? must they not have woofed?	must I not have been woofing? must you not have been woofing? must he not have been woofing? must we not have been woofing? must you not have been woofing? must they not have been woofing?