must spook
Regular verb: spook - spooked- spooked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must spook
you must spook
he must spook
we must spook
you must spook
they must spook 	I must be spooking
you must be spooking
he must be spooking
we must be spooking
you must be spooking
they must be spooking	I must have spooked
you must have spooked
he must have spooked
we must have spooked
you must have spooked
they must have spooked	I must have been spooking
you must have been spooking
he must have been spooking
we must have been spooking
you must have been spooking
they must have been spooking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not spook
you must not spook
he must not spook
we must not spook
you must not spook
they must not spook 	I must not be spooking
you must not be spooking
he must not be spooking
we must not be spooking
you must not be spooking
they must not be spooking	I must not have spooked
you must not have spooked
he must not have spooked
we must not have spooked
you must not have spooked
they must not have spooked	I must not have been spooking
you must not have been spooking
he must not have been spooking
we must not have been spooking
you must not have been spooking
they must not have been spooking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I spook?
must you spook?
must he spook?
must we spook?
must you spook?
must they spook? 	must I be spooking?
must you be spooking?
must he be spooking?
must we be spooking?
must you be spooking?
must they be spooking? 	must I have spooked?
must you have spooked?
must he have spooked?
must we have spooked?
must you have spooked?
must they have spooked? 	must I have been spooking?
must you have been spooking?
must he have been spooking?
must we have been spooking?
must you have been spooking?
must they have been spooking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not spook?
must you not spook?
must he not spook?
must we not spook?
must you not spook?
must they not spook? 	must I not be spooking?
must you not be spooking?
must he not be spooking?
must we not be spooking?
must you not be spooking?
must they not be spooking? 	must I not have spooked?
must you not have spooked?
must he not have spooked?
must we not have spooked?
must you not have spooked?
must they not have spooked? 	must I not have been spooking?
must you not have been spooking?
must he not have been spooking?
must we not have been spooking?
must you not have been spooking?
must they not have been spooking?