English verb conjugation
MUST BETHINK

Irregular verb: bethink - bethought - bethought

Affirmation

Simple form	V-ing form
I must bethink you must bethink he must bethink we must bethink you must bethink they must bethink	I must be bethinking you must be bethinking he must be bethinking we must be bethinking you must be bethinking they must be bethinking
Perfect	V-ing perfect
I must have bethought you must have bethought he must have bethought we must have bethought you must have bethought they must have bethought	I must have been bethinking you must have been bethinking he must have been bethinking we must have been bethinking you must have been bethinking they must have been bethinking

Negation

Simple form	V-ing form
I mustn't bethink you mustn't bethink he mustn't bethink we mustn't bethink you mustn't bethink they mustn't bethink	I mustn't be bethinking you mustn't be bethinking he mustn't be bethinking we mustn't be bethinking you mustn't be bethinking they mustn't be bethinking
Perfect	V-ing perfect
I mustn't have bethought you mustn't have bethought he mustn't have bethought we mustn't have bethought you mustn't have bethought they mustn't have bethought	I mustn't have been bethinking you mustn't have been bethinking he mustn't have been bethinking we mustn't have been bethinking you mustn't have been bethinking they mustn't have been bethinking

Interrogative form

Simple form	V-ing form
must I bethink? must you bethink? must he bethink? must we bethink? must you bethink? must they bethink?	must I be bethinking? must you be bethinking? must he be bethinking? must we be bethinking? must you be bethinking? must they be bethinking?
Perfect	V-ing perfect
must I have bethought? must you have bethought? must he have bethought? must we have bethought? must you have bethought? must they have bethought?	must I have been bethinking? must you have been bethinking? must he have been bethinking? must we have been bethinking? must you have been bethinking? must they have been bethinking?

Interro-negative form

Simple form	V-ing form
mustn't I bethink? mustn't you bethink? mustn't he bethink? mustn't we bethink? mustn't you bethink? mustn't they bethink?	mustn't I be bethinking? mustn't you be bethinking? mustn't he be bethinking? mustn't we be bethinking? mustn't you be bethinking? mustn't they be bethinking?
Perfect	V-ing perfect
mustn't I have bethought? mustn't you have bethought? mustn't he have bethought? mustn't we have bethought? mustn't you have bethought? mustn't they have bethought?	mustn't I have been bethinking? mustn't you have been bethinking? mustn't he have been bethinking? mustn't we have been bethinking? mustn't you have been bethinking? mustn't they have been bethinking?