English verb conjugation
MUST MUDDLE

Regular verb: muddle - muddled - muddled

Affirmation

Simple form	V-ing form
I must muddle you must muddle he must muddle we must muddle you must muddle they must muddle	I must be muddling you must be muddling he must be muddling we must be muddling you must be muddling they must be muddling
Perfect	V-ing perfect
I must have muddled you must have muddled he must have muddled we must have muddled you must have muddled they must have muddled	I must have been muddling you must have been muddling he must have been muddling we must have been muddling you must have been muddling they must have been muddling

Negation

Simple form	V-ing form
I mustn't muddle you mustn't muddle he mustn't muddle we mustn't muddle you mustn't muddle they mustn't muddle	I mustn't be muddling you mustn't be muddling he mustn't be muddling we mustn't be muddling you mustn't be muddling they mustn't be muddling
Perfect	V-ing perfect
I mustn't have muddled you mustn't have muddled he mustn't have muddled we mustn't have muddled you mustn't have muddled they mustn't have muddled	I mustn't have been muddling you mustn't have been muddling he mustn't have been muddling we mustn't have been muddling you mustn't have been muddling they mustn't have been muddling

Interrogative form

Simple form	V-ing form
must I muddle? must you muddle? must he muddle? must we muddle? must you muddle? must they muddle?	must I be muddling? must you be muddling? must he be muddling? must we be muddling? must you be muddling? must they be muddling?
Perfect	V-ing perfect
must I have muddled? must you have muddled? must he have muddled? must we have muddled? must you have muddled? must they have muddled?	must I have been muddling? must you have been muddling? must he have been muddling? must we have been muddling? must you have been muddling? must they have been muddling?

Interro-negative form

Simple form	V-ing form
mustn't I muddle? mustn't you muddle? mustn't he muddle? mustn't we muddle? mustn't you muddle? mustn't they muddle?	mustn't I be muddling? mustn't you be muddling? mustn't he be muddling? mustn't we be muddling? mustn't you be muddling? mustn't they be muddling?
Perfect	V-ing perfect
mustn't I have muddled? mustn't you have muddled? mustn't he have muddled? mustn't we have muddled? mustn't you have muddled? mustn't they have muddled?	mustn't I have been muddling? mustn't you have been muddling? mustn't he have been muddling? mustn't we have been muddling? mustn't you have been muddling? mustn't they have been muddling?