English verb conjugation
MUST TIN

Regular verb: tin - tinned - tinned

Affirmation

Simple form	V-ing form
I must tin you must tin she must tin we must tin you must tin they must tin	I must be tinning you must be tinning she 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 she 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 she 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 she 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 she 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 she 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 she 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 she tin? must we tin? must you tin? must they tin?	must I be tinning? must you be tinning? must she 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 she 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 she 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 she 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 she 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 she 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 she have been tinning? mustn't we have been tinning? mustn't you have been tinning? mustn't they have been tinning?