must tap
Regular verb: tap - tapped- tapped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must tap
you must tap
he must tap
we must tap
you must tap
they must tap 	I must be tapping
you must be tapping
he must be tapping
we must be tapping
you must be tapping
they must be tapping	I must have tapped
you must have tapped
he must have tapped
we must have tapped
you must have tapped
they must have tapped	I must have been tapping
you must have been tapping
he must have been tapping
we must have been tapping
you must have been tapping
they must have been tapping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not tap
you must not tap
he must not tap
we must not tap
you must not tap
they must not tap 	I must not be tapping
you must not be tapping
he must not be tapping
we must not be tapping
you must not be tapping
they must not be tapping	I must not have tapped
you must not have tapped
he must not have tapped
we must not have tapped
you must not have tapped
they must not have tapped	I must not have been tapping
you must not have been tapping
he must not have been tapping
we must not have been tapping
you must not have been tapping
they must not have been tapping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I tap?
must you tap?
must he tap?
must we tap?
must you tap?
must they tap? 	must I be tapping?
must you be tapping?
must he be tapping?
must we be tapping?
must you be tapping?
must they be tapping? 	must I have tapped?
must you have tapped?
must he have tapped?
must we have tapped?
must you have tapped?
must they have tapped? 	must I have been tapping?
must you have been tapping?
must he have been tapping?
must we have been tapping?
must you have been tapping?
must they have been tapping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not tap?
must you not tap?
must he not tap?
must we not tap?
must you not tap?
must they not tap? 	must I not be tapping?
must you not be tapping?
must he not be tapping?
must we not be tapping?
must you not be tapping?
must they not be tapping? 	must I not have tapped?
must you not have tapped?
must he not have tapped?
must we not have tapped?
must you not have tapped?
must they not have tapped? 	must I not have been tapping?
must you not have been tapping?
must he not have been tapping?
must we not have been tapping?
must you not have been tapping?
must they not have been tapping?