English verb conjugation
MUST SCRIMSHAW

Regular verb: scrimshaw - scrimshawed - scrimshawed

Affirmation

Simple form	V-ing form
I must scrimshaw you must scrimshaw she must scrimshaw we must scrimshaw you must scrimshaw they must scrimshaw	I must be scrimshawing you must be scrimshawing she must be scrimshawing we must be scrimshawing you must be scrimshawing they must be scrimshawing
Perfect	V-ing perfect
I must have scrimshawed you must have scrimshawed she must have scrimshawed we must have scrimshawed you must have scrimshawed they must have scrimshawed	I must have been scrimshawing you must have been scrimshawing she must have been scrimshawing we must have been scrimshawing you must have been scrimshawing they must have been scrimshawing

Negation

Simple form	V-ing form
I mustn't scrimshaw you mustn't scrimshaw she mustn't scrimshaw we mustn't scrimshaw you mustn't scrimshaw they mustn't scrimshaw	I mustn't be scrimshawing you mustn't be scrimshawing she mustn't be scrimshawing we mustn't be scrimshawing you mustn't be scrimshawing they mustn't be scrimshawing
Perfect	V-ing perfect
I mustn't have scrimshawed you mustn't have scrimshawed she mustn't have scrimshawed we mustn't have scrimshawed you mustn't have scrimshawed they mustn't have scrimshawed	I mustn't have been scrimshawing you mustn't have been scrimshawing she mustn't have been scrimshawing we mustn't have been scrimshawing you mustn't have been scrimshawing they mustn't have been scrimshawing

Interrogative form

Simple form	V-ing form
must I scrimshaw? must you scrimshaw? must she scrimshaw? must we scrimshaw? must you scrimshaw? must they scrimshaw?	must I be scrimshawing? must you be scrimshawing? must she be scrimshawing? must we be scrimshawing? must you be scrimshawing? must they be scrimshawing?
Perfect	V-ing perfect
must I have scrimshawed? must you have scrimshawed? must she have scrimshawed? must we have scrimshawed? must you have scrimshawed? must they have scrimshawed?	must I have been scrimshawing? must you have been scrimshawing? must she have been scrimshawing? must we have been scrimshawing? must you have been scrimshawing? must they have been scrimshawing?

Interro-negative form

Simple form	V-ing form
mustn't I scrimshaw? mustn't you scrimshaw? mustn't she scrimshaw? mustn't we scrimshaw? mustn't you scrimshaw? mustn't they scrimshaw?	mustn't I be scrimshawing? mustn't you be scrimshawing? mustn't she be scrimshawing? mustn't we be scrimshawing? mustn't you be scrimshawing? mustn't they be scrimshawing?
Perfect	V-ing perfect
mustn't I have scrimshawed? mustn't you have scrimshawed? mustn't she have scrimshawed? mustn't we have scrimshawed? mustn't you have scrimshawed? mustn't they have scrimshawed?	mustn't I have been scrimshawing? mustn't you have been scrimshawing? mustn't she have been scrimshawing? mustn't we have been scrimshawing? mustn't you have been scrimshawing? mustn't they have been scrimshawing?