must prattle
Regular verb: prattle - prattled- prattled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must prattle
you must prattle
she must prattle
we must prattle
you must prattle
they must prattle 	I must be prattling
you must be prattling
she must be prattling
we must be prattling
you must be prattling
they must be prattling	I must have prattled
you must have prattled
she must have prattled
we must have prattled
you must have prattled
they must have prattled	I must have been prattling
you must have been prattling
she must have been prattling
we must have been prattling
you must have been prattling
they must have been prattling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not prattle
you must not prattle
she must not prattle
we must not prattle
you must not prattle
they must not prattle 	I must not be prattling
you must not be prattling
she must not be prattling
we must not be prattling
you must not be prattling
they must not be prattling	I must not have prattled
you must not have prattled
she must not have prattled
we must not have prattled
you must not have prattled
they must not have prattled	I must not have been prattling
you must not have been prattling
she must not have been prattling
we must not have been prattling
you must not have been prattling
they must not have been prattling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I prattle?
must you prattle?
must she prattle?
must we prattle?
must you prattle?
must they prattle? 	must I be prattling?
must you be prattling?
must she be prattling?
must we be prattling?
must you be prattling?
must they be prattling? 	must I have prattled?
must you have prattled?
must she have prattled?
must we have prattled?
must you have prattled?
must they have prattled? 	must I have been prattling?
must you have been prattling?
must she have been prattling?
must we have been prattling?
must you have been prattling?
must they have been prattling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not prattle?
must you not prattle?
must she not prattle?
must we not prattle?
must you not prattle?
must they not prattle? 	must I not be prattling?
must you not be prattling?
must she not be prattling?
must we not be prattling?
must you not be prattling?
must they not be prattling? 	must I not have prattled?
must you not have prattled?
must she not have prattled?
must we not have prattled?
must you not have prattled?
must they not have prattled? 	must I not have been prattling?
must you not have been prattling?
must she not have been prattling?
must we not have been prattling?
must you not have been prattling?
must they not have been prattling?