must pencil
Regular verb: pencil - pencilled- pencilled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must pencil
you must pencil
she must pencil
we must pencil
you must pencil
they must pencil 	I must be pencilling
you must be pencilling
she must be pencilling
we must be pencilling
you must be pencilling
they must be pencilling	I must have pencilled
you must have pencilled
she must have pencilled
we must have pencilled
you must have pencilled
they must have pencilled	I must have been pencilling
you must have been pencilling
she must have been pencilling
we must have been pencilling
you must have been pencilling
they must have been pencilling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not pencil
you must not pencil
she must not pencil
we must not pencil
you must not pencil
they must not pencil 	I must not be pencilling
you must not be pencilling
she must not be pencilling
we must not be pencilling
you must not be pencilling
they must not be pencilling	I must not have pencilled
you must not have pencilled
she must not have pencilled
we must not have pencilled
you must not have pencilled
they must not have pencilled	I must not have been pencilling
you must not have been pencilling
she must not have been pencilling
we must not have been pencilling
you must not have been pencilling
they must not have been pencilling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I pencil?
must you pencil?
must she pencil?
must we pencil?
must you pencil?
must they pencil? 	must I be pencilling?
must you be pencilling?
must she be pencilling?
must we be pencilling?
must you be pencilling?
must they be pencilling? 	must I have pencilled?
must you have pencilled?
must she have pencilled?
must we have pencilled?
must you have pencilled?
must they have pencilled? 	must I have been pencilling?
must you have been pencilling?
must she have been pencilling?
must we have been pencilling?
must you have been pencilling?
must they have been pencilling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not pencil?
must you not pencil?
must she not pencil?
must we not pencil?
must you not pencil?
must they not pencil? 	must I not be pencilling?
must you not be pencilling?
must she not be pencilling?
must we not be pencilling?
must you not be pencilling?
must they not be pencilling? 	must I not have pencilled?
must you not have pencilled?
must she not have pencilled?
must we not have pencilled?
must you not have pencilled?
must they not have pencilled? 	must I not have been pencilling?
must you not have been pencilling?
must she not have been pencilling?
must we not have been pencilling?
must you not have been pencilling?
must they not have been pencilling?