English verb conjugation
MUST PRICK

Regular verb: prick - pricked - pricked

Affirmation

Simple form	V-ing form
I must prick you must prick she must prick we must prick you must prick they must prick	I must be pricking you must be pricking she must be pricking we must be pricking you must be pricking they must be pricking
Perfect	V-ing perfect
I must have pricked you must have pricked she must have pricked we must have pricked you must have pricked they must have pricked	I must have been pricking you must have been pricking she must have been pricking we must have been pricking you must have been pricking they must have been pricking

Negation

Simple form	V-ing form
I mustn't prick you mustn't prick she mustn't prick we mustn't prick you mustn't prick they mustn't prick	I mustn't be pricking you mustn't be pricking she mustn't be pricking we mustn't be pricking you mustn't be pricking they mustn't be pricking
Perfect	V-ing perfect
I mustn't have pricked you mustn't have pricked she mustn't have pricked we mustn't have pricked you mustn't have pricked they mustn't have pricked	I mustn't have been pricking you mustn't have been pricking she mustn't have been pricking we mustn't have been pricking you mustn't have been pricking they mustn't have been pricking

Interrogative form

Simple form	V-ing form
must I prick? must you prick? must she prick? must we prick? must you prick? must they prick?	must I be pricking? must you be pricking? must she be pricking? must we be pricking? must you be pricking? must they be pricking?
Perfect	V-ing perfect
must I have pricked? must you have pricked? must she have pricked? must we have pricked? must you have pricked? must they have pricked?	must I have been pricking? must you have been pricking? must she have been pricking? must we have been pricking? must you have been pricking? must they have been pricking?

Interro-negative form

Simple form	V-ing form
mustn't I prick? mustn't you prick? mustn't she prick? mustn't we prick? mustn't you prick? mustn't they prick?	mustn't I be pricking? mustn't you be pricking? mustn't she be pricking? mustn't we be pricking? mustn't you be pricking? mustn't they be pricking?
Perfect	V-ing perfect
mustn't I have pricked? mustn't you have pricked? mustn't she have pricked? mustn't we have pricked? mustn't you have pricked? mustn't they have pricked?	mustn't I have been pricking? mustn't you have been pricking? mustn't she have been pricking? mustn't we have been pricking? mustn't you have been pricking? mustn't they have been pricking?