must optimise
Verbo regular: optimise - optimised- optimised

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must optimise
you must optimise
he must optimise
we must optimise
you must optimise
they must optimise 	I must be optimising
you must be optimising
he must be optimising
we must be optimising
you must be optimising
they must be optimising	I must have optimised
you must have optimised
he must have optimised
we must have optimised
you must have optimised
they must have optimised	I must have been optimising
you must have been optimising
he must have been optimising
we must have been optimising
you must have been optimising
they must have been optimising	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't optimise
you mustn't optimise
he mustn't optimise
we mustn't optimise
you mustn't optimise
they mustn't optimise 	I mustn't be optimising
you mustn't be optimising
he mustn't be optimising
we mustn't be optimising
you mustn't be optimising
they mustn't be optimising	I mustn't have optimised
you mustn't have optimised
he mustn't have optimised
we mustn't have optimised
you mustn't have optimised
they mustn't have optimised	I mustn't have been optimising
you mustn't have been optimising
he mustn't have been optimising
we mustn't have been optimising
you mustn't have been optimising
they mustn't have been optimising	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I optimise?
must you optimise?
must he optimise?
must we optimise?
must you optimise?
must they optimise? 	must I be optimising?
must you be optimising?
must he be optimising?
must we be optimising?
must you be optimising?
must they be optimising? 	must I have optimised?
must you have optimised?
must he have optimised?
must we have optimised?
must you have optimised?
must they have optimised? 	must I have been optimising?
must you have been optimising?
must he have been optimising?
must we have been optimising?
must you have been optimising?
must they have been optimising? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I optimise?
mustn't you optimise?
mustn't he optimise?
mustn't we optimise?
mustn't you optimise?
mustn't they optimise? 	mustn't I be optimising?
mustn't you be optimising?
mustn't he be optimising?
mustn't we be optimising?
mustn't you be optimising?
mustn't they be optimising? 	mustn't I have optimised?
mustn't you have optimised?
mustn't he have optimised?
mustn't we have optimised?
mustn't you have optimised?
mustn't they have optimised? 	mustn't I have been optimising?
mustn't you have been optimising?
mustn't he have been optimising?
mustn't we have been optimising?
mustn't you have been optimising?
mustn't they have been optimising?