English verb conjugation
MUST MULL

Regular verb: mull - mulled - mulled

Affirmation

Simple form	V-ing form
I must mull you must mull he must mull we must mull you must mull they must mull	I must be mulling you must be mulling he must be mulling we must be mulling you must be mulling they must be mulling
Perfect	V-ing perfect
I must have mulled you must have mulled he must have mulled we must have mulled you must have mulled they must have mulled	I must have been mulling you must have been mulling he must have been mulling we must have been mulling you must have been mulling they must have been mulling

Negation

Simple form	V-ing form
I must not mull you must not mull he must not mull we must not mull you must not mull they must not mull	I must not be mulling you must not be mulling he must not be mulling we must not be mulling you must not be mulling they must not be mulling
Perfect	V-ing perfect
I must not have mulled you must not have mulled he must not have mulled we must not have mulled you must not have mulled they must not have mulled	I must not have been mulling you must not have been mulling he must not have been mulling we must not have been mulling you must not have been mulling they must not have been mulling

Interrogative form

Simple form	V-ing form
must I mull? must you mull? must he mull? must we mull? must you mull? must they mull?	must I be mulling? must you be mulling? must he be mulling? must we be mulling? must you be mulling? must they be mulling?
Perfect	V-ing perfect
must I have mulled? must you have mulled? must he have mulled? must we have mulled? must you have mulled? must they have mulled?	must I have been mulling? must you have been mulling? must he have been mulling? must we have been mulling? must you have been mulling? must they have been mulling?

Interro-negative form

Simple form	V-ing form
must I not mull? must you not mull? must he not mull? must we not mull? must you not mull? must they not mull?	must I not be mulling? must you not be mulling? must he not be mulling? must we not be mulling? must you not be mulling? must they not be mulling?
Perfect	V-ing perfect
must I not have mulled? must you not have mulled? must he not have mulled? must we not have mulled? must you not have mulled? must they not have mulled?	must I not have been mulling? must you not have been mulling? must he not have been mulling? must we not have been mulling? must you not have been mulling? must they not have been mulling?