must immobilise
Regular verb: immobilise - immobilised- immobilised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must immobilise
you must immobilise
he must immobilise
we must immobilise
you must immobilise
they must immobilise 	I must be immobilising
you must be immobilising
he must be immobilising
we must be immobilising
you must be immobilising
they must be immobilising	I must have immobilised
you must have immobilised
he must have immobilised
we must have immobilised
you must have immobilised
they must have immobilised	I must have been immobilising
you must have been immobilising
he must have been immobilising
we must have been immobilising
you must have been immobilising
they must have been immobilising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not immobilise
you must not immobilise
he must not immobilise
we must not immobilise
you must not immobilise
they must not immobilise 	I must not be immobilising
you must not be immobilising
he must not be immobilising
we must not be immobilising
you must not be immobilising
they must not be immobilising	I must not have immobilised
you must not have immobilised
he must not have immobilised
we must not have immobilised
you must not have immobilised
they must not have immobilised	I must not have been immobilising
you must not have been immobilising
he must not have been immobilising
we must not have been immobilising
you must not have been immobilising
they must not have been immobilising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I immobilise?
must you immobilise?
must he immobilise?
must we immobilise?
must you immobilise?
must they immobilise? 	must I be immobilising?
must you be immobilising?
must he be immobilising?
must we be immobilising?
must you be immobilising?
must they be immobilising? 	must I have immobilised?
must you have immobilised?
must he have immobilised?
must we have immobilised?
must you have immobilised?
must they have immobilised? 	must I have been immobilising?
must you have been immobilising?
must he have been immobilising?
must we have been immobilising?
must you have been immobilising?
must they have been immobilising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not immobilise?
must you not immobilise?
must he not immobilise?
must we not immobilise?
must you not immobilise?
must they not immobilise? 	must I not be immobilising?
must you not be immobilising?
must he not be immobilising?
must we not be immobilising?
must you not be immobilising?
must they not be immobilising? 	must I not have immobilised?
must you not have immobilised?
must he not have immobilised?
must we not have immobilised?
must you not have immobilised?
must they not have immobilised? 	must I not have been immobilising?
must you not have been immobilising?
must he not have been immobilising?
must we not have been immobilising?
must you not have been immobilising?
must they not have been immobilising?