must wreck
Regular verb: wreck - wrecked- wrecked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must wreck
you must wreck
he must wreck
we must wreck
you must wreck
they must wreck 	I must be wrecking
you must be wrecking
he must be wrecking
we must be wrecking
you must be wrecking
they must be wrecking	I must have wrecked
you must have wrecked
he must have wrecked
we must have wrecked
you must have wrecked
they must have wrecked	I must have been wrecking
you must have been wrecking
he must have been wrecking
we must have been wrecking
you must have been wrecking
they must have been wrecking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not wreck
you must not wreck
he must not wreck
we must not wreck
you must not wreck
they must not wreck 	I must not be wrecking
you must not be wrecking
he must not be wrecking
we must not be wrecking
you must not be wrecking
they must not be wrecking	I must not have wrecked
you must not have wrecked
he must not have wrecked
we must not have wrecked
you must not have wrecked
they must not have wrecked	I must not have been wrecking
you must not have been wrecking
he must not have been wrecking
we must not have been wrecking
you must not have been wrecking
they must not have been wrecking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I wreck?
must you wreck?
must he wreck?
must we wreck?
must you wreck?
must they wreck? 	must I be wrecking?
must you be wrecking?
must he be wrecking?
must we be wrecking?
must you be wrecking?
must they be wrecking? 	must I have wrecked?
must you have wrecked?
must he have wrecked?
must we have wrecked?
must you have wrecked?
must they have wrecked? 	must I have been wrecking?
must you have been wrecking?
must he have been wrecking?
must we have been wrecking?
must you have been wrecking?
must they have been wrecking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not wreck?
must you not wreck?
must he not wreck?
must we not wreck?
must you not wreck?
must they not wreck? 	must I not be wrecking?
must you not be wrecking?
must he not be wrecking?
must we not be wrecking?
must you not be wrecking?
must they not be wrecking? 	must I not have wrecked?
must you not have wrecked?
must he not have wrecked?
must we not have wrecked?
must you not have wrecked?
must they not have wrecked? 	must I not have been wrecking?
must you not have been wrecking?
must he not have been wrecking?
must we not have been wrecking?
must you not have been wrecking?
must they not have been wrecking?