must stabilise
Verbo regular: stabilise - stabilised- stabilised

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must stabilise
you must stabilise
he must stabilise
we must stabilise
you must stabilise
they must stabilise 	I must be stabilising
you must be stabilising
he must be stabilising
we must be stabilising
you must be stabilising
they must be stabilising	I must have stabilised
you must have stabilised
he must have stabilised
we must have stabilised
you must have stabilised
they must have stabilised	I must have been stabilising
you must have been stabilising
he must have been stabilising
we must have been stabilising
you must have been stabilising
they must have been stabilising	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not stabilise
you must not stabilise
he must not stabilise
we must not stabilise
you must not stabilise
they must not stabilise 	I must not be stabilising
you must not be stabilising
he must not be stabilising
we must not be stabilising
you must not be stabilising
they must not be stabilising	I must not have stabilised
you must not have stabilised
he must not have stabilised
we must not have stabilised
you must not have stabilised
they must not have stabilised	I must not have been stabilising
you must not have been stabilising
he must not have been stabilising
we must not have been stabilising
you must not have been stabilising
they must not have been stabilising	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I stabilise?
must you stabilise?
must he stabilise?
must we stabilise?
must you stabilise?
must they stabilise? 	must I be stabilising?
must you be stabilising?
must he be stabilising?
must we be stabilising?
must you be stabilising?
must they be stabilising? 	must I have stabilised?
must you have stabilised?
must he have stabilised?
must we have stabilised?
must you have stabilised?
must they have stabilised? 	must I have been stabilising?
must you have been stabilising?
must he have been stabilising?
must we have been stabilising?
must you have been stabilising?
must they have been stabilising? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not stabilise?
must you not stabilise?
must he not stabilise?
must we not stabilise?
must you not stabilise?
must they not stabilise? 	must I not be stabilising?
must you not be stabilising?
must he not be stabilising?
must we not be stabilising?
must you not be stabilising?
must they not be stabilising? 	must I not have stabilised?
must you not have stabilised?
must he not have stabilised?
must we not have stabilised?
must you not have stabilised?
must they not have stabilised? 	must I not have been stabilising?
must you not have been stabilising?
must he not have been stabilising?
must we not have been stabilising?
must you not have been stabilising?
must they not have been stabilising?