English verb conjugation
MUST COWL

Regular verb: cowl - cowled - cowled

Affirmation

Simple form	V-ing form
I must cowl you must cowl he must cowl we must cowl you must cowl they must cowl	I must be cowling you must be cowling he must be cowling we must be cowling you must be cowling they must be cowling
Perfect	V-ing perfect
I must have cowled you must have cowled he must have cowled we must have cowled you must have cowled they must have cowled	I must have been cowling you must have been cowling he must have been cowling we must have been cowling you must have been cowling they must have been cowling

Negation

Simple form	V-ing form
I must not cowl you must not cowl he must not cowl we must not cowl you must not cowl they must not cowl	I must not be cowling you must not be cowling he must not be cowling we must not be cowling you must not be cowling they must not be cowling
Perfect	V-ing perfect
I must not have cowled you must not have cowled he must not have cowled we must not have cowled you must not have cowled they must not have cowled	I must not have been cowling you must not have been cowling he must not have been cowling we must not have been cowling you must not have been cowling they must not have been cowling

Interrogative form

Simple form	V-ing form
must I cowl? must you cowl? must he cowl? must we cowl? must you cowl? must they cowl?	must I be cowling? must you be cowling? must he be cowling? must we be cowling? must you be cowling? must they be cowling?
Perfect	V-ing perfect
must I have cowled? must you have cowled? must he have cowled? must we have cowled? must you have cowled? must they have cowled?	must I have been cowling? must you have been cowling? must he have been cowling? must we have been cowling? must you have been cowling? must they have been cowling?

Interro-negative form

Simple form	V-ing form
must I not cowl? must you not cowl? must he not cowl? must we not cowl? must you not cowl? must they not cowl?	must I not be cowling? must you not be cowling? must he not be cowling? must we not be cowling? must you not be cowling? must they not be cowling?
Perfect	V-ing perfect
must I not have cowled? must you not have cowled? must he not have cowled? must we not have cowled? must you not have cowled? must they not have cowled?	must I not have been cowling? must you not have been cowling? must he not have been cowling? must we not have been cowling? must you not have been cowling? must they not have been cowling?