must choir
Verbo regular: choir - choired- choired

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must choir
you must choir
he must choir
we must choir
you must choir
they must choir 	I must be choiring
you must be choiring
he must be choiring
we must be choiring
you must be choiring
they must be choiring	I must have choired
you must have choired
he must have choired
we must have choired
you must have choired
they must have choired	I must have been choiring
you must have been choiring
he must have been choiring
we must have been choiring
you must have been choiring
they must have been choiring	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not choir
you must not choir
he must not choir
we must not choir
you must not choir
they must not choir 	I must not be choiring
you must not be choiring
he must not be choiring
we must not be choiring
you must not be choiring
they must not be choiring	I must not have choired
you must not have choired
he must not have choired
we must not have choired
you must not have choired
they must not have choired	I must not have been choiring
you must not have been choiring
he must not have been choiring
we must not have been choiring
you must not have been choiring
they must not have been choiring	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I choir?
must you choir?
must he choir?
must we choir?
must you choir?
must they choir? 	must I be choiring?
must you be choiring?
must he be choiring?
must we be choiring?
must you be choiring?
must they be choiring? 	must I have choired?
must you have choired?
must he have choired?
must we have choired?
must you have choired?
must they have choired? 	must I have been choiring?
must you have been choiring?
must he have been choiring?
must we have been choiring?
must you have been choiring?
must they have been choiring? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not choir?
must you not choir?
must he not choir?
must we not choir?
must you not choir?
must they not choir? 	must I not be choiring?
must you not be choiring?
must he not be choiring?
must we not be choiring?
must you not be choiring?
must they not be choiring? 	must I not have choired?
must you not have choired?
must he not have choired?
must we not have choired?
must you not have choired?
must they not have choired? 	must I not have been choiring?
must you not have been choiring?
must he not have been choiring?
must we not have been choiring?
must you not have been choiring?
must they not have been choiring?