English verb conjugation
MUST TIN

Regular verb: tin - tinned - tinned

Affirmation

Simple form	V-ing form
I must tin you must tin he must tin we must tin you must tin they must tin	I must be tinning you must be tinning he must be tinning we must be tinning you must be tinning they must be tinning
Perfect	V-ing perfect
I must have tinned you must have tinned he must have tinned we must have tinned you must have tinned they must have tinned	I must have been tinning you must have been tinning he must have been tinning we must have been tinning you must have been tinning they must have been tinning

Negation

Simple form	V-ing form
I mustn't tin you mustn't tin he mustn't tin we mustn't tin you mustn't tin they mustn't tin	I mustn't be tinning you mustn't be tinning he mustn't be tinning we mustn't be tinning you mustn't be tinning they mustn't be tinning
Perfect	V-ing perfect
I mustn't have tinned you mustn't have tinned he mustn't have tinned we mustn't have tinned you mustn't have tinned they mustn't have tinned	I mustn't have been tinning you mustn't have been tinning he mustn't have been tinning we mustn't have been tinning you mustn't have been tinning they mustn't have been tinning

Interrogative form

Simple form	V-ing form
must I tin? must you tin? must he tin? must we tin? must you tin? must they tin?	must I be tinning? must you be tinning? must he be tinning? must we be tinning? must you be tinning? must they be tinning?
Perfect	V-ing perfect
must I have tinned? must you have tinned? must he have tinned? must we have tinned? must you have tinned? must they have tinned?	must I have been tinning? must you have been tinning? must he have been tinning? must we have been tinning? must you have been tinning? must they have been tinning?

Interro-negative form

Simple form	V-ing form
mustn't I tin? mustn't you tin? mustn't he tin? mustn't we tin? mustn't you tin? mustn't they tin?	mustn't I be tinning? mustn't you be tinning? mustn't he be tinning? mustn't we be tinning? mustn't you be tinning? mustn't they be tinning?
Perfect	V-ing perfect
mustn't I have tinned? mustn't you have tinned? mustn't he have tinned? mustn't we have tinned? mustn't you have tinned? mustn't they have tinned?	mustn't I have been tinning? mustn't you have been tinning? mustn't he have been tinning? mustn't we have been tinning? mustn't you have been tinning? mustn't they have been tinning?