English verb conjugation
MUST PLONK

Regular verb: plonk - plonked - plonked

Affirmation

Simple form	V-ing form
I must plonk you must plonk he must plonk we must plonk you must plonk they must plonk	I must be plonking you must be plonking he must be plonking we must be plonking you must be plonking they must be plonking
Perfect	V-ing perfect
I must have plonked you must have plonked he must have plonked we must have plonked you must have plonked they must have plonked	I must have been plonking you must have been plonking he must have been plonking we must have been plonking you must have been plonking they must have been plonking

Negation

Simple form	V-ing form
I mustn't plonk you mustn't plonk he mustn't plonk we mustn't plonk you mustn't plonk they mustn't plonk	I mustn't be plonking you mustn't be plonking he mustn't be plonking we mustn't be plonking you mustn't be plonking they mustn't be plonking
Perfect	V-ing perfect
I mustn't have plonked you mustn't have plonked he mustn't have plonked we mustn't have plonked you mustn't have plonked they mustn't have plonked	I mustn't have been plonking you mustn't have been plonking he mustn't have been plonking we mustn't have been plonking you mustn't have been plonking they mustn't have been plonking

Interrogative form

Simple form	V-ing form
must I plonk? must you plonk? must he plonk? must we plonk? must you plonk? must they plonk?	must I be plonking? must you be plonking? must he be plonking? must we be plonking? must you be plonking? must they be plonking?
Perfect	V-ing perfect
must I have plonked? must you have plonked? must he have plonked? must we have plonked? must you have plonked? must they have plonked?	must I have been plonking? must you have been plonking? must he have been plonking? must we have been plonking? must you have been plonking? must they have been plonking?

Interro-negative form

Simple form	V-ing form
mustn't I plonk? mustn't you plonk? mustn't he plonk? mustn't we plonk? mustn't you plonk? mustn't they plonk?	mustn't I be plonking? mustn't you be plonking? mustn't he be plonking? mustn't we be plonking? mustn't you be plonking? mustn't they be plonking?
Perfect	V-ing perfect
mustn't I have plonked? mustn't you have plonked? mustn't he have plonked? mustn't we have plonked? mustn't you have plonked? mustn't they have plonked?	mustn't I have been plonking? mustn't you have been plonking? mustn't he have been plonking? mustn't we have been plonking? mustn't you have been plonking? mustn't they have been plonking?