must skidoo
Regular verb: skidoo - skidooed- skidooed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must skidoo
you must skidoo
he must skidoo
we must skidoo
you must skidoo
they must skidoo 	I must be skidooing
you must be skidooing
he must be skidooing
we must be skidooing
you must be skidooing
they must be skidooing	I must have skidooed
you must have skidooed
he must have skidooed
we must have skidooed
you must have skidooed
they must have skidooed	I must have been skidooing
you must have been skidooing
he must have been skidooing
we must have been skidooing
you must have been skidooing
they must have been skidooing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not skidoo
you must not skidoo
he must not skidoo
we must not skidoo
you must not skidoo
they must not skidoo 	I must not be skidooing
you must not be skidooing
he must not be skidooing
we must not be skidooing
you must not be skidooing
they must not be skidooing	I must not have skidooed
you must not have skidooed
he must not have skidooed
we must not have skidooed
you must not have skidooed
they must not have skidooed	I must not have been skidooing
you must not have been skidooing
he must not have been skidooing
we must not have been skidooing
you must not have been skidooing
they must not have been skidooing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I skidoo?
must you skidoo?
must he skidoo?
must we skidoo?
must you skidoo?
must they skidoo? 	must I be skidooing?
must you be skidooing?
must he be skidooing?
must we be skidooing?
must you be skidooing?
must they be skidooing? 	must I have skidooed?
must you have skidooed?
must he have skidooed?
must we have skidooed?
must you have skidooed?
must they have skidooed? 	must I have been skidooing?
must you have been skidooing?
must he have been skidooing?
must we have been skidooing?
must you have been skidooing?
must they have been skidooing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not skidoo?
must you not skidoo?
must he not skidoo?
must we not skidoo?
must you not skidoo?
must they not skidoo? 	must I not be skidooing?
must you not be skidooing?
must he not be skidooing?
must we not be skidooing?
must you not be skidooing?
must they not be skidooing? 	must I not have skidooed?
must you not have skidooed?
must he not have skidooed?
must we not have skidooed?
must you not have skidooed?
must they not have skidooed? 	must I not have been skidooing?
must you not have been skidooing?
must he not have been skidooing?
must we not have been skidooing?
must you not have been skidooing?
must they not have been skidooing?