English verb conjugation
MUST CONK

Regular verb: conk - conked - conked

Affirmation

Simple form	V-ing form
I must conk you must conk he must conk we must conk you must conk they must conk	I must be conking you must be conking he must be conking we must be conking you must be conking they must be conking
Perfect	V-ing perfect
I must have conked you must have conked he must have conked we must have conked you must have conked they must have conked	I must have been conking you must have been conking he must have been conking we must have been conking you must have been conking they must have been conking

Negation

Simple form	V-ing form
I mustn't conk you mustn't conk he mustn't conk we mustn't conk you mustn't conk they mustn't conk	I mustn't be conking you mustn't be conking he mustn't be conking we mustn't be conking you mustn't be conking they mustn't be conking
Perfect	V-ing perfect
I mustn't have conked you mustn't have conked he mustn't have conked we mustn't have conked you mustn't have conked they mustn't have conked	I mustn't have been conking you mustn't have been conking he mustn't have been conking we mustn't have been conking you mustn't have been conking they mustn't have been conking

Interrogative form

Simple form	V-ing form
must I conk? must you conk? must he conk? must we conk? must you conk? must they conk?	must I be conking? must you be conking? must he be conking? must we be conking? must you be conking? must they be conking?
Perfect	V-ing perfect
must I have conked? must you have conked? must he have conked? must we have conked? must you have conked? must they have conked?	must I have been conking? must you have been conking? must he have been conking? must we have been conking? must you have been conking? must they have been conking?

Interro-negative form

Simple form	V-ing form
mustn't I conk? mustn't you conk? mustn't he conk? mustn't we conk? mustn't you conk? mustn't they conk?	mustn't I be conking? mustn't you be conking? mustn't he be conking? mustn't we be conking? mustn't you be conking? mustn't they be conking?
Perfect	V-ing perfect
mustn't I have conked? mustn't you have conked? mustn't he have conked? mustn't we have conked? mustn't you have conked? mustn't they have conked?	mustn't I have been conking? mustn't you have been conking? mustn't he have been conking? mustn't we have been conking? mustn't you have been conking? mustn't they have been conking?