English verb conjugation
MUST PENCIL

Regular verb: pencil - pencilled - pencilled

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
I mustn't pencil you mustn't pencil she mustn't pencil we mustn't pencil you mustn't pencil they mustn't pencil	I mustn't be pencilling you mustn't be pencilling she mustn't be pencilling we mustn't be pencilling you mustn't be pencilling they mustn't be pencilling
Perfect	V-ing perfect
I mustn't have pencilled you mustn't have pencilled she mustn't have pencilled we mustn't have pencilled you mustn't have pencilled they mustn't have pencilled	I mustn't have been pencilling you mustn't have been pencilling she mustn't have been pencilling we mustn't have been pencilling you mustn't have been pencilling they mustn't have been pencilling

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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
mustn't I pencil? mustn't you pencil? mustn't she pencil? mustn't we pencil? mustn't you pencil? mustn't they pencil?	mustn't I be pencilling? mustn't you be pencilling? mustn't she be pencilling? mustn't we be pencilling? mustn't you be pencilling? mustn't they be pencilling?
Perfect	V-ing perfect
mustn't I have pencilled? mustn't you have pencilled? mustn't she have pencilled? mustn't we have pencilled? mustn't you have pencilled? mustn't they have pencilled?	mustn't I have been pencilling? mustn't you have been pencilling? mustn't she have been pencilling? mustn't we have been pencilling? mustn't you have been pencilling? mustn't they have been pencilling?