English verb conjugation
MUST DEMARK

Regular verb: demark - demarked - demarked

Affirmation

Simple form	V-ing form
I must demark you must demark he must demark we must demark you must demark they must demark	I must be demarking you must be demarking he must be demarking we must be demarking you must be demarking they must be demarking
Perfect	V-ing perfect
I must have demarked you must have demarked he must have demarked we must have demarked you must have demarked they must have demarked	I must have been demarking you must have been demarking he must have been demarking we must have been demarking you must have been demarking they must have been demarking

Negation

Simple form	V-ing form
I mustn't demark you mustn't demark he mustn't demark we mustn't demark you mustn't demark they mustn't demark	I mustn't be demarking you mustn't be demarking he mustn't be demarking we mustn't be demarking you mustn't be demarking they mustn't be demarking
Perfect	V-ing perfect
I mustn't have demarked you mustn't have demarked he mustn't have demarked we mustn't have demarked you mustn't have demarked they mustn't have demarked	I mustn't have been demarking you mustn't have been demarking he mustn't have been demarking we mustn't have been demarking you mustn't have been demarking they mustn't have been demarking

Interrogative form

Simple form	V-ing form
must I demark? must you demark? must he demark? must we demark? must you demark? must they demark?	must I be demarking? must you be demarking? must he be demarking? must we be demarking? must you be demarking? must they be demarking?
Perfect	V-ing perfect
must I have demarked? must you have demarked? must he have demarked? must we have demarked? must you have demarked? must they have demarked?	must I have been demarking? must you have been demarking? must he have been demarking? must we have been demarking? must you have been demarking? must they have been demarking?

Interro-negative form

Simple form	V-ing form
mustn't I demark? mustn't you demark? mustn't he demark? mustn't we demark? mustn't you demark? mustn't they demark?	mustn't I be demarking? mustn't you be demarking? mustn't he be demarking? mustn't we be demarking? mustn't you be demarking? mustn't they be demarking?
Perfect	V-ing perfect
mustn't I have demarked? mustn't you have demarked? mustn't he have demarked? mustn't we have demarked? mustn't you have demarked? mustn't they have demarked?	mustn't I have been demarking? mustn't you have been demarking? mustn't he have been demarking? mustn't we have been demarking? mustn't you have been demarking? mustn't they have been demarking?