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 must not muddle you must not muddle he must not muddle we must not muddle you must not muddle they must not muddle	I must not be muddling you must not be muddling he must not be muddling we must not be muddling you must not be muddling they must not be muddling
Perfect	V-ing perfect
I must not have muddled you must not have muddled he must not have muddled we must not have muddled you must not have muddled they must not have muddled	I must not have been muddling you must not have been muddling he must not have been muddling we must not have been muddling you must not have been muddling they must not 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
must I not muddle? must you not muddle? must he not muddle? must we not muddle? must you not muddle? must they not muddle?	must I not be muddling? must you not be muddling? must he not be muddling? must we not be muddling? must you not be muddling? must they not be muddling?
Perfect	V-ing perfect
must I not have muddled? must you not have muddled? must he not have muddled? must we not have muddled? must you not have muddled? must they not have muddled?	must I not have been muddling? must you not have been muddling? must he not have been muddling? must we not have been muddling? must you not have been muddling? must they not have been muddling?