must cache
Regular verb: cache - cached- cached

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must cache
you must cache
she must cache
we must cache
you must cache
they must cache 	I must be caching
you must be caching
she must be caching
we must be caching
you must be caching
they must be caching	I must have cached
you must have cached
she must have cached
we must have cached
you must have cached
they must have cached	I must have been caching
you must have been caching
she must have been caching
we must have been caching
you must have been caching
they must have been caching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not cache
you must not cache
she must not cache
we must not cache
you must not cache
they must not cache 	I must not be caching
you must not be caching
she must not be caching
we must not be caching
you must not be caching
they must not be caching	I must not have cached
you must not have cached
she must not have cached
we must not have cached
you must not have cached
they must not have cached	I must not have been caching
you must not have been caching
she must not have been caching
we must not have been caching
you must not have been caching
they must not have been caching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I cache?
must you cache?
must she cache?
must we cache?
must you cache?
must they cache? 	must I be caching?
must you be caching?
must she be caching?
must we be caching?
must you be caching?
must they be caching? 	must I have cached?
must you have cached?
must she have cached?
must we have cached?
must you have cached?
must they have cached? 	must I have been caching?
must you have been caching?
must she have been caching?
must we have been caching?
must you have been caching?
must they have been caching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not cache?
must you not cache?
must she not cache?
must we not cache?
must you not cache?
must they not cache? 	must I not be caching?
must you not be caching?
must she not be caching?
must we not be caching?
must you not be caching?
must they not be caching? 	must I not have cached?
must you not have cached?
must she not have cached?
must we not have cached?
must you not have cached?
must they not have cached? 	must I not have been caching?
must you not have been caching?
must she not have been caching?
must we not have been caching?
must you not have been caching?
must they not have been caching?