must swarm
Verbo regular: swarm - swarmed- swarmed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must swarm
you must swarm
she must swarm
we must swarm
you must swarm
they must swarm 	I must be swarming
you must be swarming
she must be swarming
we must be swarming
you must be swarming
they must be swarming	I must have swarmed
you must have swarmed
she must have swarmed
we must have swarmed
you must have swarmed
they must have swarmed	I must have been swarming
you must have been swarming
she must have been swarming
we must have been swarming
you must have been swarming
they must have been swarming	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not swarm
you must not swarm
she must not swarm
we must not swarm
you must not swarm
they must not swarm 	I must not be swarming
you must not be swarming
she must not be swarming
we must not be swarming
you must not be swarming
they must not be swarming	I must not have swarmed
you must not have swarmed
she must not have swarmed
we must not have swarmed
you must not have swarmed
they must not have swarmed	I must not have been swarming
you must not have been swarming
she must not have been swarming
we must not have been swarming
you must not have been swarming
they must not have been swarming	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I swarm?
must you swarm?
must she swarm?
must we swarm?
must you swarm?
must they swarm? 	must I be swarming?
must you be swarming?
must she be swarming?
must we be swarming?
must you be swarming?
must they be swarming? 	must I have swarmed?
must you have swarmed?
must she have swarmed?
must we have swarmed?
must you have swarmed?
must they have swarmed? 	must I have been swarming?
must you have been swarming?
must she have been swarming?
must we have been swarming?
must you have been swarming?
must they have been swarming? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not swarm?
must you not swarm?
must she not swarm?
must we not swarm?
must you not swarm?
must they not swarm? 	must I not be swarming?
must you not be swarming?
must she not be swarming?
must we not be swarming?
must you not be swarming?
must they not be swarming? 	must I not have swarmed?
must you not have swarmed?
must she not have swarmed?
must we not have swarmed?
must you not have swarmed?
must they not have swarmed? 	must I not have been swarming?
must you not have been swarming?
must she not have been swarming?
must we not have been swarming?
must you not have been swarming?
must they not have been swarming?