English verb conjugation
MUST THATCH

Regular verb: thatch - thatched - thatched

Affirmation

Simple form	V-ing form
I must thatch you must thatch he must thatch we must thatch you must thatch they must thatch	I must be thatching you must be thatching he must be thatching we must be thatching you must be thatching they must be thatching
Perfect	V-ing perfect
I must have thatched you must have thatched he must have thatched we must have thatched you must have thatched they must have thatched	I must have been thatching you must have been thatching he must have been thatching we must have been thatching you must have been thatching they must have been thatching

Negation

Simple form	V-ing form
I mustn't thatch you mustn't thatch he mustn't thatch we mustn't thatch you mustn't thatch they mustn't thatch	I mustn't be thatching you mustn't be thatching he mustn't be thatching we mustn't be thatching you mustn't be thatching they mustn't be thatching
Perfect	V-ing perfect
I mustn't have thatched you mustn't have thatched he mustn't have thatched we mustn't have thatched you mustn't have thatched they mustn't have thatched	I mustn't have been thatching you mustn't have been thatching he mustn't have been thatching we mustn't have been thatching you mustn't have been thatching they mustn't have been thatching

Interrogative form

Simple form	V-ing form
must I thatch? must you thatch? must he thatch? must we thatch? must you thatch? must they thatch?	must I be thatching? must you be thatching? must he be thatching? must we be thatching? must you be thatching? must they be thatching?
Perfect	V-ing perfect
must I have thatched? must you have thatched? must he have thatched? must we have thatched? must you have thatched? must they have thatched?	must I have been thatching? must you have been thatching? must he have been thatching? must we have been thatching? must you have been thatching? must they have been thatching?

Interro-negative form

Simple form	V-ing form
mustn't I thatch? mustn't you thatch? mustn't he thatch? mustn't we thatch? mustn't you thatch? mustn't they thatch?	mustn't I be thatching? mustn't you be thatching? mustn't he be thatching? mustn't we be thatching? mustn't you be thatching? mustn't they be thatching?
Perfect	V-ing perfect
mustn't I have thatched? mustn't you have thatched? mustn't he have thatched? mustn't we have thatched? mustn't you have thatched? mustn't they have thatched?	mustn't I have been thatching? mustn't you have been thatching? mustn't he have been thatching? mustn't we have been thatching? mustn't you have been thatching? mustn't they have been thatching?