must scuffle
Regular verb: scuffle - scuffled- scuffled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must scuffle
you must scuffle
he must scuffle
we must scuffle
you must scuffle
they must scuffle 	I must be scuffling
you must be scuffling
he must be scuffling
we must be scuffling
you must be scuffling
they must be scuffling	I must have scuffled
you must have scuffled
he must have scuffled
we must have scuffled
you must have scuffled
they must have scuffled	I must have been scuffling
you must have been scuffling
he must have been scuffling
we must have been scuffling
you must have been scuffling
they must have been scuffling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not scuffle
you must not scuffle
he must not scuffle
we must not scuffle
you must not scuffle
they must not scuffle 	I must not be scuffling
you must not be scuffling
he must not be scuffling
we must not be scuffling
you must not be scuffling
they must not be scuffling	I must not have scuffled
you must not have scuffled
he must not have scuffled
we must not have scuffled
you must not have scuffled
they must not have scuffled	I must not have been scuffling
you must not have been scuffling
he must not have been scuffling
we must not have been scuffling
you must not have been scuffling
they must not have been scuffling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I scuffle?
must you scuffle?
must he scuffle?
must we scuffle?
must you scuffle?
must they scuffle? 	must I be scuffling?
must you be scuffling?
must he be scuffling?
must we be scuffling?
must you be scuffling?
must they be scuffling? 	must I have scuffled?
must you have scuffled?
must he have scuffled?
must we have scuffled?
must you have scuffled?
must they have scuffled? 	must I have been scuffling?
must you have been scuffling?
must he have been scuffling?
must we have been scuffling?
must you have been scuffling?
must they have been scuffling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not scuffle?
must you not scuffle?
must he not scuffle?
must we not scuffle?
must you not scuffle?
must they not scuffle? 	must I not be scuffling?
must you not be scuffling?
must he not be scuffling?
must we not be scuffling?
must you not be scuffling?
must they not be scuffling? 	must I not have scuffled?
must you not have scuffled?
must he not have scuffled?
must we not have scuffled?
must you not have scuffled?
must they not have scuffled? 	must I not have been scuffling?
must you not have been scuffling?
must he not have been scuffling?
must we not have been scuffling?
must you not have been scuffling?
must they not have been scuffling?