must birdie
Verbo regular: birdie - birdied- birdied

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must birdie
you must birdie
he must birdie
we must birdie
you must birdie
they must birdie 	I must be birdying
you must be birdying
he must be birdying
we must be birdying
you must be birdying
they must be birdying	I must have birdied
you must have birdied
he must have birdied
we must have birdied
you must have birdied
they must have birdied	I must have been birdying
you must have been birdying
he must have been birdying
we must have been birdying
you must have been birdying
they must have been birdying	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not birdie
you must not birdie
he must not birdie
we must not birdie
you must not birdie
they must not birdie 	I must not be birdying
you must not be birdying
he must not be birdying
we must not be birdying
you must not be birdying
they must not be birdying	I must not have birdied
you must not have birdied
he must not have birdied
we must not have birdied
you must not have birdied
they must not have birdied	I must not have been birdying
you must not have been birdying
he must not have been birdying
we must not have been birdying
you must not have been birdying
they must not have been birdying	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I birdie?
must you birdie?
must he birdie?
must we birdie?
must you birdie?
must they birdie? 	must I be birdying?
must you be birdying?
must he be birdying?
must we be birdying?
must you be birdying?
must they be birdying? 	must I have birdied?
must you have birdied?
must he have birdied?
must we have birdied?
must you have birdied?
must they have birdied? 	must I have been birdying?
must you have been birdying?
must he have been birdying?
must we have been birdying?
must you have been birdying?
must they have been birdying? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not birdie?
must you not birdie?
must he not birdie?
must we not birdie?
must you not birdie?
must they not birdie? 	must I not be birdying?
must you not be birdying?
must he not be birdying?
must we not be birdying?
must you not be birdying?
must they not be birdying? 	must I not have birdied?
must you not have birdied?
must he not have birdied?
must we not have birdied?
must you not have birdied?
must they not have birdied? 	must I not have been birdying?
must you not have been birdying?
must he not have been birdying?
must we not have been birdying?
must you not have been birdying?
must they not have been birdying?