must petrify
Verbo regolare: petrify - petrified- petrified

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must petrify
you must petrify
she must petrify
we must petrify
you must petrify
they must petrify 	I must be petrifying
you must be petrifying
she must be petrifying
we must be petrifying
you must be petrifying
they must be petrifying	I must have petrified
you must have petrified
she must have petrified
we must have petrified
you must have petrified
they must have petrified	I must have been petrifying
you must have been petrifying
she must have been petrifying
we must have been petrifying
you must have been petrifying
they must have been petrifying	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must not petrify
you must not petrify
she must not petrify
we must not petrify
you must not petrify
they must not petrify 	I must not be petrifying
you must not be petrifying
she must not be petrifying
we must not be petrifying
you must not be petrifying
they must not be petrifying	I must not have petrified
you must not have petrified
she must not have petrified
we must not have petrified
you must not have petrified
they must not have petrified	I must not have been petrifying
you must not have been petrifying
she must not have been petrifying
we must not have been petrifying
you must not have been petrifying
they must not have been petrifying	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I petrify?
must you petrify?
must she petrify?
must we petrify?
must you petrify?
must they petrify? 	must I be petrifying?
must you be petrifying?
must she be petrifying?
must we be petrifying?
must you be petrifying?
must they be petrifying? 	must I have petrified?
must you have petrified?
must she have petrified?
must we have petrified?
must you have petrified?
must they have petrified? 	must I have been petrifying?
must you have been petrifying?
must she have been petrifying?
must we have been petrifying?
must you have been petrifying?
must they have been petrifying? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I not petrify?
must you not petrify?
must she not petrify?
must we not petrify?
must you not petrify?
must they not petrify? 	must I not be petrifying?
must you not be petrifying?
must she not be petrifying?
must we not be petrifying?
must you not be petrifying?
must they not be petrifying? 	must I not have petrified?
must you not have petrified?
must she not have petrified?
must we not have petrified?
must you not have petrified?
must they not have petrified? 	must I not have been petrifying?
must you not have been petrifying?
must she not have been petrifying?
must we not have been petrifying?
must you not have been petrifying?
must they not have been petrifying?