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 must not clank you must not clank he must not clank we must not clank you must not clank they must not clank	I must not be clanking you must not be clanking he must not be clanking we must not be clanking you must not be clanking they must not be clanking
Perfect	V-ing perfect
I must not have clanked you must not have clanked he must not have clanked we must not have clanked you must not have clanked they must not have clanked	I must not have been clanking you must not have been clanking he must not have been clanking we must not have been clanking you must not have been clanking they must not 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
must I not clank? must you not clank? must he not clank? must we not clank? must you not clank? must they not clank?	must I not be clanking? must you not be clanking? must he not be clanking? must we not be clanking? must you not be clanking? must they not be clanking?
Perfect	V-ing perfect
must I not have clanked? must you not have clanked? must he not have clanked? must we not have clanked? must you not have clanked? must they not have clanked?	must I not have been clanking? must you not have been clanking? must he not have been clanking? must we not have been clanking? must you not have been clanking? must they not have been clanking?