English verb conjugation
MUST CLUNK

Regular verb: clunk - clunked - clunked

Affirmation

Simple form	V-ing form
I must clunk you must clunk he must clunk we must clunk you must clunk they must clunk	I must be clunking you must be clunking he must be clunking we must be clunking you must be clunking they must be clunking
Perfect	V-ing perfect
I must have clunked you must have clunked he must have clunked we must have clunked you must have clunked they must have clunked	I must have been clunking you must have been clunking he must have been clunking we must have been clunking you must have been clunking they must have been clunking

Negation

Simple form	V-ing form
I mustn't clunk you mustn't clunk he mustn't clunk we mustn't clunk you mustn't clunk they mustn't clunk	I mustn't be clunking you mustn't be clunking he mustn't be clunking we mustn't be clunking you mustn't be clunking they mustn't be clunking
Perfect	V-ing perfect
I mustn't have clunked you mustn't have clunked he mustn't have clunked we mustn't have clunked you mustn't have clunked they mustn't have clunked	I mustn't have been clunking you mustn't have been clunking he mustn't have been clunking we mustn't have been clunking you mustn't have been clunking they mustn't have been clunking

Interrogative form

Simple form	V-ing form
must I clunk? must you clunk? must he clunk? must we clunk? must you clunk? must they clunk?	must I be clunking? must you be clunking? must he be clunking? must we be clunking? must you be clunking? must they be clunking?
Perfect	V-ing perfect
must I have clunked? must you have clunked? must he have clunked? must we have clunked? must you have clunked? must they have clunked?	must I have been clunking? must you have been clunking? must he have been clunking? must we have been clunking? must you have been clunking? must they have been clunking?

Interro-negative form

Simple form	V-ing form
mustn't I clunk? mustn't you clunk? mustn't he clunk? mustn't we clunk? mustn't you clunk? mustn't they clunk?	mustn't I be clunking? mustn't you be clunking? mustn't he be clunking? mustn't we be clunking? mustn't you be clunking? mustn't they be clunking?
Perfect	V-ing perfect
mustn't I have clunked? mustn't you have clunked? mustn't he have clunked? mustn't we have clunked? mustn't you have clunked? mustn't they have clunked?	mustn't I have been clunking? mustn't you have been clunking? mustn't he have been clunking? mustn't we have been clunking? mustn't you have been clunking? mustn't they have been clunking?