must crave
Verbo regular: crave - craved- craved

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must crave
you must crave
she must crave
we must crave
you must crave
they must crave 	I must be craving
you must be craving
she must be craving
we must be craving
you must be craving
they must be craving	I must have craved
you must have craved
she must have craved
we must have craved
you must have craved
they must have craved	I must have been craving
you must have been craving
she must have been craving
we must have been craving
you must have been craving
they must have been craving	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not crave
you must not crave
she must not crave
we must not crave
you must not crave
they must not crave 	I must not be craving
you must not be craving
she must not be craving
we must not be craving
you must not be craving
they must not be craving	I must not have craved
you must not have craved
she must not have craved
we must not have craved
you must not have craved
they must not have craved	I must not have been craving
you must not have been craving
she must not have been craving
we must not have been craving
you must not have been craving
they must not have been craving	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I crave?
must you crave?
must she crave?
must we crave?
must you crave?
must they crave? 	must I be craving?
must you be craving?
must she be craving?
must we be craving?
must you be craving?
must they be craving? 	must I have craved?
must you have craved?
must she have craved?
must we have craved?
must you have craved?
must they have craved? 	must I have been craving?
must you have been craving?
must she have been craving?
must we have been craving?
must you have been craving?
must they have been craving? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not crave?
must you not crave?
must she not crave?
must we not crave?
must you not crave?
must they not crave? 	must I not be craving?
must you not be craving?
must she not be craving?
must we not be craving?
must you not be craving?
must they not be craving? 	must I not have craved?
must you not have craved?
must she not have craved?
must we not have craved?
must you not have craved?
must they not have craved? 	must I not have been craving?
must you not have been craving?
must she not have been craving?
must we not have been craving?
must you not have been craving?
must they not have been craving?