English verb conjugation
MUST CLANK

Regular verb: clank - clanked - clanked

Affirmation

Simple form	V-ing form
I must clank you must clank he must clank we must clank you must clank they must clank	I must be clanking you must be clanking he must be clanking we must be clanking you must be clanking they must be clanking
Perfect	V-ing perfect
I must have clanked you must have clanked he must have clanked we must have clanked you must have clanked they must have clanked	I must have been clanking you must have been clanking he must have been clanking we must have been clanking you must have been clanking they must have been clanking

Negation

Simple form	V-ing form
I mustn't clank you mustn't clank he mustn't clank we mustn't clank you mustn't clank they mustn't clank	I mustn't be clanking you mustn't be clanking he mustn't be clanking we mustn't be clanking you mustn't be clanking they mustn't be clanking
Perfect	V-ing perfect
I mustn't have clanked you mustn't have clanked he mustn't have clanked we mustn't have clanked you mustn't have clanked they mustn't have clanked	I mustn't have been clanking you mustn't have been clanking he mustn't have been clanking we mustn't have been clanking you mustn't have been clanking they mustn't have been clanking

Interrogative form

Simple form	V-ing form
must I clank? must you clank? must he clank? must we clank? must you clank? must they clank?	must I be clanking? must you be clanking? must he be clanking? must we be clanking? must you be clanking? must they be clanking?
Perfect	V-ing perfect
must I have clanked? must you have clanked? must he have clanked? must we have clanked? must you have clanked? must they have clanked?	must I have been clanking? must you have been clanking? must he have been clanking? must we have been clanking? must you have been clanking? must they have been clanking?

Interro-negative form

Simple form	V-ing form
mustn't I clank? mustn't you clank? mustn't he clank? mustn't we clank? mustn't you clank? mustn't they clank?	mustn't I be clanking? mustn't you be clanking? mustn't he be clanking? mustn't we be clanking? mustn't you be clanking? mustn't they be clanking?
Perfect	V-ing perfect
mustn't I have clanked? mustn't you have clanked? mustn't he have clanked? mustn't we have clanked? mustn't you have clanked? mustn't they have clanked?	mustn't I have been clanking? mustn't you have been clanking? mustn't he have been clanking? mustn't we have been clanking? mustn't you have been clanking? mustn't they have been clanking?