must concretise
Regular verb: concretise - concretised- concretised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must concretise
you must concretise
he must concretise
we must concretise
you must concretise
they must concretise 	I must be concretising
you must be concretising
he must be concretising
we must be concretising
you must be concretising
they must be concretising	I must have concretised
you must have concretised
he must have concretised
we must have concretised
you must have concretised
they must have concretised	I must have been concretising
you must have been concretising
he must have been concretising
we must have been concretising
you must have been concretising
they must have been concretising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not concretise
you must not concretise
he must not concretise
we must not concretise
you must not concretise
they must not concretise 	I must not be concretising
you must not be concretising
he must not be concretising
we must not be concretising
you must not be concretising
they must not be concretising	I must not have concretised
you must not have concretised
he must not have concretised
we must not have concretised
you must not have concretised
they must not have concretised	I must not have been concretising
you must not have been concretising
he must not have been concretising
we must not have been concretising
you must not have been concretising
they must not have been concretising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I concretise?
must you concretise?
must he concretise?
must we concretise?
must you concretise?
must they concretise? 	must I be concretising?
must you be concretising?
must he be concretising?
must we be concretising?
must you be concretising?
must they be concretising? 	must I have concretised?
must you have concretised?
must he have concretised?
must we have concretised?
must you have concretised?
must they have concretised? 	must I have been concretising?
must you have been concretising?
must he have been concretising?
must we have been concretising?
must you have been concretising?
must they have been concretising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not concretise?
must you not concretise?
must he not concretise?
must we not concretise?
must you not concretise?
must they not concretise? 	must I not be concretising?
must you not be concretising?
must he not be concretising?
must we not be concretising?
must you not be concretising?
must they not be concretising? 	must I not have concretised?
must you not have concretised?
must he not have concretised?
must we not have concretised?
must you not have concretised?
must they not have concretised? 	must I not have been concretising?
must you not have been concretising?
must he not have been concretising?
must we not have been concretising?
must you not have been concretising?
must they not have been concretising?