must subsist
Verbo regular: subsist - subsisted- subsisted

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must subsist
you must subsist
he must subsist
we must subsist
you must subsist
they must subsist 	I must be subsisting
you must be subsisting
he must be subsisting
we must be subsisting
you must be subsisting
they must be subsisting	I must have subsisted
you must have subsisted
he must have subsisted
we must have subsisted
you must have subsisted
they must have subsisted	I must have been subsisting
you must have been subsisting
he must have been subsisting
we must have been subsisting
you must have been subsisting
they must have been subsisting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not subsist
you must not subsist
he must not subsist
we must not subsist
you must not subsist
they must not subsist 	I must not be subsisting
you must not be subsisting
he must not be subsisting
we must not be subsisting
you must not be subsisting
they must not be subsisting	I must not have subsisted
you must not have subsisted
he must not have subsisted
we must not have subsisted
you must not have subsisted
they must not have subsisted	I must not have been subsisting
you must not have been subsisting
he must not have been subsisting
we must not have been subsisting
you must not have been subsisting
they must not have been subsisting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I subsist?
must you subsist?
must he subsist?
must we subsist?
must you subsist?
must they subsist? 	must I be subsisting?
must you be subsisting?
must he be subsisting?
must we be subsisting?
must you be subsisting?
must they be subsisting? 	must I have subsisted?
must you have subsisted?
must he have subsisted?
must we have subsisted?
must you have subsisted?
must they have subsisted? 	must I have been subsisting?
must you have been subsisting?
must he have been subsisting?
must we have been subsisting?
must you have been subsisting?
must they have been subsisting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not subsist?
must you not subsist?
must he not subsist?
must we not subsist?
must you not subsist?
must they not subsist? 	must I not be subsisting?
must you not be subsisting?
must he not be subsisting?
must we not be subsisting?
must you not be subsisting?
must they not be subsisting? 	must I not have subsisted?
must you not have subsisted?
must he not have subsisted?
must we not have subsisted?
must you not have subsisted?
must they not have subsisted? 	must I not have been subsisting?
must you not have been subsisting?
must he not have been subsisting?
must we not have been subsisting?
must you not have been subsisting?
must they not have been subsisting?