English verb conjugation
MUST TRACE

Regular verb: trace - traced - traced

Affirmation

Simple form	V-ing form
I must trace you must trace he must trace we must trace you must trace they must trace	I must be tracing you must be tracing he must be tracing we must be tracing you must be tracing they must be tracing
Perfect	V-ing perfect
I must have traced you must have traced he must have traced we must have traced you must have traced they must have traced	I must have been tracing you must have been tracing he must have been tracing we must have been tracing you must have been tracing they must have been tracing

Negation

Simple form	V-ing form
I must not trace you must not trace he must not trace we must not trace you must not trace they must not trace	I must not be tracing you must not be tracing he must not be tracing we must not be tracing you must not be tracing they must not be tracing
Perfect	V-ing perfect
I must not have traced you must not have traced he must not have traced we must not have traced you must not have traced they must not have traced	I must not have been tracing you must not have been tracing he must not have been tracing we must not have been tracing you must not have been tracing they must not have been tracing

Interrogative form

Simple form	V-ing form
must I trace? must you trace? must he trace? must we trace? must you trace? must they trace?	must I be tracing? must you be tracing? must he be tracing? must we be tracing? must you be tracing? must they be tracing?
Perfect	V-ing perfect
must I have traced? must you have traced? must he have traced? must we have traced? must you have traced? must they have traced?	must I have been tracing? must you have been tracing? must he have been tracing? must we have been tracing? must you have been tracing? must they have been tracing?

Interro-negative form

Simple form	V-ing form
must I not trace? must you not trace? must he not trace? must we not trace? must you not trace? must they not trace?	must I not be tracing? must you not be tracing? must he not be tracing? must we not be tracing? must you not be tracing? must they not be tracing?
Perfect	V-ing perfect
must I not have traced? must you not have traced? must he not have traced? must we not have traced? must you not have traced? must they not have traced?	must I not have been tracing? must you not have been tracing? must he not have been tracing? must we not have been tracing? must you not have been tracing? must they not have been tracing?