English verb conjugation
MUST PURFLE

Regular verb: purfle - purfled - purfled

Affirmation

Simple form	V-ing form
I must purfle you must purfle he must purfle we must purfle you must purfle they must purfle	I must be purfling you must be purfling he must be purfling we must be purfling you must be purfling they must be purfling
Perfect	V-ing perfect
I must have purfled you must have purfled he must have purfled we must have purfled you must have purfled they must have purfled	I must have been purfling you must have been purfling he must have been purfling we must have been purfling you must have been purfling they must have been purfling

Negation

Simple form	V-ing form
I mustn't purfle you mustn't purfle he mustn't purfle we mustn't purfle you mustn't purfle they mustn't purfle	I mustn't be purfling you mustn't be purfling he mustn't be purfling we mustn't be purfling you mustn't be purfling they mustn't be purfling
Perfect	V-ing perfect
I mustn't have purfled you mustn't have purfled he mustn't have purfled we mustn't have purfled you mustn't have purfled they mustn't have purfled	I mustn't have been purfling you mustn't have been purfling he mustn't have been purfling we mustn't have been purfling you mustn't have been purfling they mustn't have been purfling

Interrogative form

Simple form	V-ing form
must I purfle? must you purfle? must he purfle? must we purfle? must you purfle? must they purfle?	must I be purfling? must you be purfling? must he be purfling? must we be purfling? must you be purfling? must they be purfling?
Perfect	V-ing perfect
must I have purfled? must you have purfled? must he have purfled? must we have purfled? must you have purfled? must they have purfled?	must I have been purfling? must you have been purfling? must he have been purfling? must we have been purfling? must you have been purfling? must they have been purfling?

Interro-negative form

Simple form	V-ing form
mustn't I purfle? mustn't you purfle? mustn't he purfle? mustn't we purfle? mustn't you purfle? mustn't they purfle?	mustn't I be purfling? mustn't you be purfling? mustn't he be purfling? mustn't we be purfling? mustn't you be purfling? mustn't they be purfling?
Perfect	V-ing perfect
mustn't I have purfled? mustn't you have purfled? mustn't he have purfled? mustn't we have purfled? mustn't you have purfled? mustn't they have purfled?	mustn't I have been purfling? mustn't you have been purfling? mustn't he have been purfling? mustn't we have been purfling? mustn't you have been purfling? mustn't they have been purfling?