must syllogise
Regular verb: syllogise - syllogised- syllogised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must syllogise
you must syllogise
he must syllogise
we must syllogise
you must syllogise
they must syllogise 	I must be syllogising
you must be syllogising
he must be syllogising
we must be syllogising
you must be syllogising
they must be syllogising	I must have syllogised
you must have syllogised
he must have syllogised
we must have syllogised
you must have syllogised
they must have syllogised	I must have been syllogising
you must have been syllogising
he must have been syllogising
we must have been syllogising
you must have been syllogising
they must have been syllogising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not syllogise
you must not syllogise
he must not syllogise
we must not syllogise
you must not syllogise
they must not syllogise 	I must not be syllogising
you must not be syllogising
he must not be syllogising
we must not be syllogising
you must not be syllogising
they must not be syllogising	I must not have syllogised
you must not have syllogised
he must not have syllogised
we must not have syllogised
you must not have syllogised
they must not have syllogised	I must not have been syllogising
you must not have been syllogising
he must not have been syllogising
we must not have been syllogising
you must not have been syllogising
they must not have been syllogising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I syllogise?
must you syllogise?
must he syllogise?
must we syllogise?
must you syllogise?
must they syllogise? 	must I be syllogising?
must you be syllogising?
must he be syllogising?
must we be syllogising?
must you be syllogising?
must they be syllogising? 	must I have syllogised?
must you have syllogised?
must he have syllogised?
must we have syllogised?
must you have syllogised?
must they have syllogised? 	must I have been syllogising?
must you have been syllogising?
must he have been syllogising?
must we have been syllogising?
must you have been syllogising?
must they have been syllogising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not syllogise?
must you not syllogise?
must he not syllogise?
must we not syllogise?
must you not syllogise?
must they not syllogise? 	must I not be syllogising?
must you not be syllogising?
must he not be syllogising?
must we not be syllogising?
must you not be syllogising?
must they not be syllogising? 	must I not have syllogised?
must you not have syllogised?
must he not have syllogised?
must we not have syllogised?
must you not have syllogised?
must they not have syllogised? 	must I not have been syllogising?
must you not have been syllogising?
must he not have been syllogising?
must we not have been syllogising?
must you not have been syllogising?
must they not have been syllogising?