English verb conjugation
MUST FLECK

Regular verb: fleck - flecked - flecked

Affirmation

Simple form	V-ing form
I must fleck you must fleck he must fleck we must fleck you must fleck they must fleck	I must be flecking you must be flecking he must be flecking we must be flecking you must be flecking they must be flecking
Perfect	V-ing perfect
I must have flecked you must have flecked he must have flecked we must have flecked you must have flecked they must have flecked	I must have been flecking you must have been flecking he must have been flecking we must have been flecking you must have been flecking they must have been flecking

Negation

Simple form	V-ing form
I mustn't fleck you mustn't fleck he mustn't fleck we mustn't fleck you mustn't fleck they mustn't fleck	I mustn't be flecking you mustn't be flecking he mustn't be flecking we mustn't be flecking you mustn't be flecking they mustn't be flecking
Perfect	V-ing perfect
I mustn't have flecked you mustn't have flecked he mustn't have flecked we mustn't have flecked you mustn't have flecked they mustn't have flecked	I mustn't have been flecking you mustn't have been flecking he mustn't have been flecking we mustn't have been flecking you mustn't have been flecking they mustn't have been flecking

Interrogative form

Simple form	V-ing form
must I fleck? must you fleck? must he fleck? must we fleck? must you fleck? must they fleck?	must I be flecking? must you be flecking? must he be flecking? must we be flecking? must you be flecking? must they be flecking?
Perfect	V-ing perfect
must I have flecked? must you have flecked? must he have flecked? must we have flecked? must you have flecked? must they have flecked?	must I have been flecking? must you have been flecking? must he have been flecking? must we have been flecking? must you have been flecking? must they have been flecking?

Interro-negative form

Simple form	V-ing form
mustn't I fleck? mustn't you fleck? mustn't he fleck? mustn't we fleck? mustn't you fleck? mustn't they fleck?	mustn't I be flecking? mustn't you be flecking? mustn't he be flecking? mustn't we be flecking? mustn't you be flecking? mustn't they be flecking?
Perfect	V-ing perfect
mustn't I have flecked? mustn't you have flecked? mustn't he have flecked? mustn't we have flecked? mustn't you have flecked? mustn't they have flecked?	mustn't I have been flecking? mustn't you have been flecking? mustn't he have been flecking? mustn't we have been flecking? mustn't you have been flecking? mustn't they have been flecking?