must offîceii
Verbo regular: offîceii - offîceiied- offîceiied

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must offîceii
you must offîceii
he must offîceii
we must offîceii
you must offîceii
they must offîceii 	I must be offîceiiing
you must be offîceiiing
he must be offîceiiing
we must be offîceiiing
you must be offîceiiing
they must be offîceiiing	I must have offîceiied
you must have offîceiied
he must have offîceiied
we must have offîceiied
you must have offîceiied
they must have offîceiied	I must have been offîceiiing
you must have been offîceiiing
he must have been offîceiiing
we must have been offîceiiing
you must have been offîceiiing
they must have been offîceiiing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not offîceii
you must not offîceii
he must not offîceii
we must not offîceii
you must not offîceii
they must not offîceii 	I must not be offîceiiing
you must not be offîceiiing
he must not be offîceiiing
we must not be offîceiiing
you must not be offîceiiing
they must not be offîceiiing	I must not have offîceiied
you must not have offîceiied
he must not have offîceiied
we must not have offîceiied
you must not have offîceiied
they must not have offîceiied	I must not have been offîceiiing
you must not have been offîceiiing
he must not have been offîceiiing
we must not have been offîceiiing
you must not have been offîceiiing
they must not have been offîceiiing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I offîceii?
must you offîceii?
must he offîceii?
must we offîceii?
must you offîceii?
must they offîceii? 	must I be offîceiiing?
must you be offîceiiing?
must he be offîceiiing?
must we be offîceiiing?
must you be offîceiiing?
must they be offîceiiing? 	must I have offîceiied?
must you have offîceiied?
must he have offîceiied?
must we have offîceiied?
must you have offîceiied?
must they have offîceiied? 	must I have been offîceiiing?
must you have been offîceiiing?
must he have been offîceiiing?
must we have been offîceiiing?
must you have been offîceiiing?
must they have been offîceiiing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not offîceii?
must you not offîceii?
must he not offîceii?
must we not offîceii?
must you not offîceii?
must they not offîceii? 	must I not be offîceiiing?
must you not be offîceiiing?
must he not be offîceiiing?
must we not be offîceiiing?
must you not be offîceiiing?
must they not be offîceiiing? 	must I not have offîceiied?
must you not have offîceiied?
must he not have offîceiied?
must we not have offîceiied?
must you not have offîceiied?
must they not have offîceiied? 	must I not have been offîceiiing?
must you not have been offîceiiing?
must he not have been offîceiiing?
must we not have been offîceiiing?
must you not have been offîceiiing?
must they not have been offîceiiing?