English verb conjugation
MUST TREK

Regular verb: trek - trekked - trekked

Affirmation

Simple form	V-ing form
I must trek you must trek he must trek we must trek you must trek they must trek	I must be trekking you must be trekking he must be trekking we must be trekking you must be trekking they must be trekking
Perfect	V-ing perfect
I must have trekked you must have trekked he must have trekked we must have trekked you must have trekked they must have trekked	I must have been trekking you must have been trekking he must have been trekking we must have been trekking you must have been trekking they must have been trekking

Negation

Simple form	V-ing form
I must not trek you must not trek he must not trek we must not trek you must not trek they must not trek	I must not be trekking you must not be trekking he must not be trekking we must not be trekking you must not be trekking they must not be trekking
Perfect	V-ing perfect
I must not have trekked you must not have trekked he must not have trekked we must not have trekked you must not have trekked they must not have trekked	I must not have been trekking you must not have been trekking he must not have been trekking we must not have been trekking you must not have been trekking they must not have been trekking

Interrogative form

Simple form	V-ing form
must I trek? must you trek? must he trek? must we trek? must you trek? must they trek?	must I be trekking? must you be trekking? must he be trekking? must we be trekking? must you be trekking? must they be trekking?
Perfect	V-ing perfect
must I have trekked? must you have trekked? must he have trekked? must we have trekked? must you have trekked? must they have trekked?	must I have been trekking? must you have been trekking? must he have been trekking? must we have been trekking? must you have been trekking? must they have been trekking?

Interro-negative form

Simple form	V-ing form
must I not trek? must you not trek? must he not trek? must we not trek? must you not trek? must they not trek?	must I not be trekking? must you not be trekking? must he not be trekking? must we not be trekking? must you not be trekking? must they not be trekking?
Perfect	V-ing perfect
must I not have trekked? must you not have trekked? must he not have trekked? must we not have trekked? must you not have trekked? must they not have trekked?	must I not have been trekking? must you not have been trekking? must he not have been trekking? must we not have been trekking? must you not have been trekking? must they not have been trekking?