must thermostat
Verbo regular: thermostat - thermostated- thermostated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must thermostat
you must thermostat
he must thermostat
we must thermostat
you must thermostat
they must thermostat 	I must be thermostating
you must be thermostating
he must be thermostating
we must be thermostating
you must be thermostating
they must be thermostating	I must have thermostated
you must have thermostated
he must have thermostated
we must have thermostated
you must have thermostated
they must have thermostated	I must have been thermostating
you must have been thermostating
he must have been thermostating
we must have been thermostating
you must have been thermostating
they must have been thermostating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not thermostat
you must not thermostat
he must not thermostat
we must not thermostat
you must not thermostat
they must not thermostat 	I must not be thermostating
you must not be thermostating
he must not be thermostating
we must not be thermostating
you must not be thermostating
they must not be thermostating	I must not have thermostated
you must not have thermostated
he must not have thermostated
we must not have thermostated
you must not have thermostated
they must not have thermostated	I must not have been thermostating
you must not have been thermostating
he must not have been thermostating
we must not have been thermostating
you must not have been thermostating
they must not have been thermostating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I thermostat?
must you thermostat?
must he thermostat?
must we thermostat?
must you thermostat?
must they thermostat? 	must I be thermostating?
must you be thermostating?
must he be thermostating?
must we be thermostating?
must you be thermostating?
must they be thermostating? 	must I have thermostated?
must you have thermostated?
must he have thermostated?
must we have thermostated?
must you have thermostated?
must they have thermostated? 	must I have been thermostating?
must you have been thermostating?
must he have been thermostating?
must we have been thermostating?
must you have been thermostating?
must they have been thermostating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not thermostat?
must you not thermostat?
must he not thermostat?
must we not thermostat?
must you not thermostat?
must they not thermostat? 	must I not be thermostating?
must you not be thermostating?
must he not be thermostating?
must we not be thermostating?
must you not be thermostating?
must they not be thermostating? 	must I not have thermostated?
must you not have thermostated?
must he not have thermostated?
must we not have thermostated?
must you not have thermostated?
must they not have thermostated? 	must I not have been thermostating?
must you not have been thermostating?
must he not have been thermostating?
must we not have been thermostating?
must you not have been thermostating?
must they not have been thermostating?