must abut
Regular verb: abut - abuted- abuted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must abut
you must abut
he must abut
we must abut
you must abut
they must abut 	I must be abuting
you must be abuting
he must be abuting
we must be abuting
you must be abuting
they must be abuting	I must have abuted
you must have abuted
he must have abuted
we must have abuted
you must have abuted
they must have abuted	I must have been abuting
you must have been abuting
he must have been abuting
we must have been abuting
you must have been abuting
they must have been abuting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not abut
you must not abut
he must not abut
we must not abut
you must not abut
they must not abut 	I must not be abuting
you must not be abuting
he must not be abuting
we must not be abuting
you must not be abuting
they must not be abuting	I must not have abuted
you must not have abuted
he must not have abuted
we must not have abuted
you must not have abuted
they must not have abuted	I must not have been abuting
you must not have been abuting
he must not have been abuting
we must not have been abuting
you must not have been abuting
they must not have been abuting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I abut?
must you abut?
must he abut?
must we abut?
must you abut?
must they abut? 	must I be abuting?
must you be abuting?
must he be abuting?
must we be abuting?
must you be abuting?
must they be abuting? 	must I have abuted?
must you have abuted?
must he have abuted?
must we have abuted?
must you have abuted?
must they have abuted? 	must I have been abuting?
must you have been abuting?
must he have been abuting?
must we have been abuting?
must you have been abuting?
must they have been abuting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not abut?
must you not abut?
must he not abut?
must we not abut?
must you not abut?
must they not abut? 	must I not be abuting?
must you not be abuting?
must he not be abuting?
must we not be abuting?
must you not be abuting?
must they not be abuting? 	must I not have abuted?
must you not have abuted?
must he not have abuted?
must we not have abuted?
must you not have abuted?
must they not have abuted? 	must I not have been abuting?
must you not have been abuting?
must he not have been abuting?
must we not have been abuting?
must you not have been abuting?
must they not have been abuting?