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
she must optimise
we must optimise
you must optimise
they must optimise 	I must be optimising
you must be optimising
she must be optimising
we must be optimising
you must be optimising
they must be optimising	I must have optimised
you must have optimised
she 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
she 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 must not optimise
you must not optimise
she must not optimise
we must not optimise
you must not optimise
they must not optimise 	I must not be optimising
you must not be optimising
she must not be optimising
we must not be optimising
you must not be optimising
they must not be optimising	I must not have optimised
you must not have optimised
she must not have optimised
we must not have optimised
you must not have optimised
they must not have optimised	I must not have been optimising
you must not have been optimising
she must not have been optimising
we must not have been optimising
you must not have been optimising
they must not have been optimising	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I optimise?
must you optimise?
must she optimise?
must we optimise?
must you optimise?
must they optimise? 	must I be optimising?
must you be optimising?
must she be optimising?
must we be optimising?
must you be optimising?
must they be optimising? 	must I have optimised?
must you have optimised?
must she 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 she 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 	
must I not optimise?
must you not optimise?
must she not optimise?
must we not optimise?
must you not optimise?
must they not optimise? 	must I not be optimising?
must you not be optimising?
must she not be optimising?
must we not be optimising?
must you not be optimising?
must they not be optimising? 	must I not have optimised?
must you not have optimised?
must she not have optimised?
must we not have optimised?
must you not have optimised?
must they not have optimised? 	must I not have been optimising?
must you not have been optimising?
must she not have been optimising?
must we not have been optimising?
must you not have been optimising?
must they not have been optimising?