Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I must think think you must think think he must think think we must think think you must think think they must think think
V-ing form
I must be think thinking you must be think thinking he must be think thinking we must be think thinking you must be think thinking they must be think thinking
Perfect
I must have think thinked you must have think thinked he must have think thinked we must have think thinked you must have think thinked they must have think thinked
V-ing perfect
I must have been think thinking you must have been think thinking he must have been think thinking we must have been think thinking you must have been think thinking they must have been think thinking
Negation
Simple form
I mustn't think think you mustn't think think he mustn't think think we mustn't think think you mustn't think think they mustn't think think
V-ing form
I mustn't be think thinking you mustn't be think thinking he mustn't be think thinking we mustn't be think thinking you mustn't be think thinking they mustn't be think thinking
Perfect
I mustn't have think thinked you mustn't have think thinked he mustn't have think thinked we mustn't have think thinked you mustn't have think thinked they mustn't have think thinked
V-ing perfect
I mustn't have been think thinking you mustn't have been think thinking he mustn't have been think thinking we mustn't have been think thinking you mustn't have been think thinking they mustn't have been think thinking
Interrogative form
Simple form
must I think think? must you think think? must he think think? must we think think? must you think think? must they think think?
V-ing form
must I be think thinking? must you be think thinking? must he be think thinking? must we be think thinking? must you be think thinking? must they be think thinking?
Perfect
must I have think thinked? must you have think thinked? must he have think thinked? must we have think thinked? must you have think thinked? must they have think thinked?
V-ing perfect
must I have been think thinking? must you have been think thinking? must he have been think thinking? must we have been think thinking? must you have been think thinking? must they have been think thinking?
Interro-negative form
Simple form
mustn't I think think? mustn't you think think? mustn't he think think? mustn't we think think? mustn't you think think? mustn't they think think?
V-ing form
mustn't I be think thinking? mustn't you be think thinking? mustn't he be think thinking? mustn't we be think thinking? mustn't you be think thinking? mustn't they be think thinking?
Perfect
mustn't I have think thinked? mustn't you have think thinked? mustn't he have think thinked? mustn't we have think thinked? mustn't you have think thinked? mustn't they have think thinked?
V-ing perfect
mustn't I have been think thinking? mustn't you have been think thinking? mustn't he have been think thinking? mustn't we have been think thinking? mustn't you have been think thinking? mustn't they have been think thinking?