English verb conjugation
MUST IRK

Regular verb: irk - irked - irked

Affirmation

Simple form	V-ing form
I must irk you must irk he must irk we must irk you must irk they must irk	I must be irking you must be irking he must be irking we must be irking you must be irking they must be irking
Perfect	V-ing perfect
I must have irked you must have irked he must have irked we must have irked you must have irked they must have irked	I must have been irking you must have been irking he must have been irking we must have been irking you must have been irking they must have been irking

Negation

Simple form	V-ing form
I mustn't irk you mustn't irk he mustn't irk we mustn't irk you mustn't irk they mustn't irk	I mustn't be irking you mustn't be irking he mustn't be irking we mustn't be irking you mustn't be irking they mustn't be irking
Perfect	V-ing perfect
I mustn't have irked you mustn't have irked he mustn't have irked we mustn't have irked you mustn't have irked they mustn't have irked	I mustn't have been irking you mustn't have been irking he mustn't have been irking we mustn't have been irking you mustn't have been irking they mustn't have been irking

Interrogative form

Simple form	V-ing form
must I irk? must you irk? must he irk? must we irk? must you irk? must they irk?	must I be irking? must you be irking? must he be irking? must we be irking? must you be irking? must they be irking?
Perfect	V-ing perfect
must I have irked? must you have irked? must he have irked? must we have irked? must you have irked? must they have irked?	must I have been irking? must you have been irking? must he have been irking? must we have been irking? must you have been irking? must they have been irking?

Interro-negative form

Simple form	V-ing form
mustn't I irk? mustn't you irk? mustn't he irk? mustn't we irk? mustn't you irk? mustn't they irk?	mustn't I be irking? mustn't you be irking? mustn't he be irking? mustn't we be irking? mustn't you be irking? mustn't they be irking?
Perfect	V-ing perfect
mustn't I have irked? mustn't you have irked? mustn't he have irked? mustn't we have irked? mustn't you have irked? mustn't they have irked?	mustn't I have been irking? mustn't you have been irking? mustn't he have been irking? mustn't we have been irking? mustn't you have been irking? mustn't they have been irking?