must flock
Verbo regular: flock - flocked- flocked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must flock
you must flock
he must flock
we must flock
you must flock
they must flock 	I must be flocking
you must be flocking
he must be flocking
we must be flocking
you must be flocking
they must be flocking	I must have flocked
you must have flocked
he must have flocked
we must have flocked
you must have flocked
they must have flocked	I must have been flocking
you must have been flocking
he must have been flocking
we must have been flocking
you must have been flocking
they must have been flocking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not flock
you must not flock
he must not flock
we must not flock
you must not flock
they must not flock 	I must not be flocking
you must not be flocking
he must not be flocking
we must not be flocking
you must not be flocking
they must not be flocking	I must not have flocked
you must not have flocked
he must not have flocked
we must not have flocked
you must not have flocked
they must not have flocked	I must not have been flocking
you must not have been flocking
he must not have been flocking
we must not have been flocking
you must not have been flocking
they must not have been flocking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I flock?
must you flock?
must he flock?
must we flock?
must you flock?
must they flock? 	must I be flocking?
must you be flocking?
must he be flocking?
must we be flocking?
must you be flocking?
must they be flocking? 	must I have flocked?
must you have flocked?
must he have flocked?
must we have flocked?
must you have flocked?
must they have flocked? 	must I have been flocking?
must you have been flocking?
must he have been flocking?
must we have been flocking?
must you have been flocking?
must they have been flocking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not flock?
must you not flock?
must he not flock?
must we not flock?
must you not flock?
must they not flock? 	must I not be flocking?
must you not be flocking?
must he not be flocking?
must we not be flocking?
must you not be flocking?
must they not be flocking? 	must I not have flocked?
must you not have flocked?
must he not have flocked?
must we not have flocked?
must you not have flocked?
must they not have flocked? 	must I not have been flocking?
must you not have been flocking?
must he not have been flocking?
must we not have been flocking?
must you not have been flocking?
must they not have been flocking?