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 mustn't woof you mustn't woof he mustn't woof we mustn't woof you mustn't woof they mustn't woof	I mustn't be woofing you mustn't be woofing he mustn't be woofing we mustn't be woofing you mustn't be woofing they mustn't be woofing
Perfect	V-ing perfect
I mustn't have woofed you mustn't have woofed he mustn't have woofed we mustn't have woofed you mustn't have woofed they mustn't have woofed	I mustn't have been woofing you mustn't have been woofing he mustn't have been woofing we mustn't have been woofing you mustn't have been woofing they mustn't 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
mustn't I woof? mustn't you woof? mustn't he woof? mustn't we woof? mustn't you woof? mustn't they woof?	mustn't I be woofing? mustn't you be woofing? mustn't he be woofing? mustn't we be woofing? mustn't you be woofing? mustn't they be woofing?
Perfect	V-ing perfect
mustn't I have woofed? mustn't you have woofed? mustn't he have woofed? mustn't we have woofed? mustn't you have woofed? mustn't they have woofed?	mustn't I have been woofing? mustn't you have been woofing? mustn't he have been woofing? mustn't we have been woofing? mustn't you have been woofing? mustn't they have been woofing?