must base
Verbo regolare: base - based- based

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must base
you must base
he must base
we must base
you must base
they must base 	I must be basing
you must be basing
he must be basing
we must be basing
you must be basing
they must be basing	I must have based
you must have based
he must have based
we must have based
you must have based
they must have based	I must have been basing
you must have been basing
he must have been basing
we must have been basing
you must have been basing
they must have been basing	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must not base
you must not base
he must not base
we must not base
you must not base
they must not base 	I must not be basing
you must not be basing
he must not be basing
we must not be basing
you must not be basing
they must not be basing	I must not have based
you must not have based
he must not have based
we must not have based
you must not have based
they must not have based	I must not have been basing
you must not have been basing
he must not have been basing
we must not have been basing
you must not have been basing
they must not have been basing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I base?
must you base?
must he base?
must we base?
must you base?
must they base? 	must I be basing?
must you be basing?
must he be basing?
must we be basing?
must you be basing?
must they be basing? 	must I have based?
must you have based?
must he have based?
must we have based?
must you have based?
must they have based? 	must I have been basing?
must you have been basing?
must he have been basing?
must we have been basing?
must you have been basing?
must they have been basing? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I not base?
must you not base?
must he not base?
must we not base?
must you not base?
must they not base? 	must I not be basing?
must you not be basing?
must he not be basing?
must we not be basing?
must you not be basing?
must they not be basing? 	must I not have based?
must you not have based?
must he not have based?
must we not have based?
must you not have based?
must they not have based? 	must I not have been basing?
must you not have been basing?
must he not have been basing?
must we not have been basing?
must you not have been basing?
must they not have been basing?