English verb conjugation
MUST IRK

Regular verb: irk - irked - irked

Affirmation

Simple form	V-ing form
I must irk you must irk she must irk we must irk you must irk they must irk	I must be irking you must be irking she 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 she 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 she 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 she 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 she 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 she 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 she 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 she irk? must we irk? must you irk? must they irk?	must I be irking? must you be irking? must she 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 she 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 she 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 she 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 she 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 she 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 she have been irking? mustn't we have been irking? mustn't you have been irking? mustn't they have been irking?