English verb conjugation
MUST BESTIR

Regular verb: bestir - bestirred - bestirred

Affirmation

Simple form	V-ing form
I must bestir you must bestir he must bestir we must bestir you must bestir they must bestir	I must be bestirring you must be bestirring he must be bestirring we must be bestirring you must be bestirring they must be bestirring
Perfect	V-ing perfect
I must have bestirred you must have bestirred he must have bestirred we must have bestirred you must have bestirred they must have bestirred	I must have been bestirring you must have been bestirring he must have been bestirring we must have been bestirring you must have been bestirring they must have been bestirring

Negation

Simple form	V-ing form
I must not bestir you must not bestir he must not bestir we must not bestir you must not bestir they must not bestir	I must not be bestirring you must not be bestirring he must not be bestirring we must not be bestirring you must not be bestirring they must not be bestirring
Perfect	V-ing perfect
I must not have bestirred you must not have bestirred he must not have bestirred we must not have bestirred you must not have bestirred they must not have bestirred	I must not have been bestirring you must not have been bestirring he must not have been bestirring we must not have been bestirring you must not have been bestirring they must not have been bestirring

Interrogative form

Simple form	V-ing form
must I bestir? must you bestir? must he bestir? must we bestir? must you bestir? must they bestir?	must I be bestirring? must you be bestirring? must he be bestirring? must we be bestirring? must you be bestirring? must they be bestirring?
Perfect	V-ing perfect
must I have bestirred? must you have bestirred? must he have bestirred? must we have bestirred? must you have bestirred? must they have bestirred?	must I have been bestirring? must you have been bestirring? must he have been bestirring? must we have been bestirring? must you have been bestirring? must they have been bestirring?

Interro-negative form

Simple form	V-ing form
must I not bestir? must you not bestir? must he not bestir? must we not bestir? must you not bestir? must they not bestir?	must I not be bestirring? must you not be bestirring? must he not be bestirring? must we not be bestirring? must you not be bestirring? must they not be bestirring?
Perfect	V-ing perfect
must I not have bestirred? must you not have bestirred? must he not have bestirred? must we not have bestirred? must you not have bestirred? must they not have bestirred?	must I not have been bestirring? must you not have been bestirring? must he not have been bestirring? must we not have been bestirring? must you not have been bestirring? must they not have been bestirring?