must contaminate
Verbo regolare: contaminate - contaminated- contaminated

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must contaminate
you must contaminate
he must contaminate
we must contaminate
you must contaminate
they must contaminate 	I must be contaminating
you must be contaminating
he must be contaminating
we must be contaminating
you must be contaminating
they must be contaminating	I must have contaminated
you must have contaminated
he must have contaminated
we must have contaminated
you must have contaminated
they must have contaminated	I must have been contaminating
you must have been contaminating
he must have been contaminating
we must have been contaminating
you must have been contaminating
they must have been contaminating	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must not contaminate
you must not contaminate
he must not contaminate
we must not contaminate
you must not contaminate
they must not contaminate 	I must not be contaminating
you must not be contaminating
he must not be contaminating
we must not be contaminating
you must not be contaminating
they must not be contaminating	I must not have contaminated
you must not have contaminated
he must not have contaminated
we must not have contaminated
you must not have contaminated
they must not have contaminated	I must not have been contaminating
you must not have been contaminating
he must not have been contaminating
we must not have been contaminating
you must not have been contaminating
they must not have been contaminating	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I contaminate?
must you contaminate?
must he contaminate?
must we contaminate?
must you contaminate?
must they contaminate? 	must I be contaminating?
must you be contaminating?
must he be contaminating?
must we be contaminating?
must you be contaminating?
must they be contaminating? 	must I have contaminated?
must you have contaminated?
must he have contaminated?
must we have contaminated?
must you have contaminated?
must they have contaminated? 	must I have been contaminating?
must you have been contaminating?
must he have been contaminating?
must we have been contaminating?
must you have been contaminating?
must they have been contaminating? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I not contaminate?
must you not contaminate?
must he not contaminate?
must we not contaminate?
must you not contaminate?
must they not contaminate? 	must I not be contaminating?
must you not be contaminating?
must he not be contaminating?
must we not be contaminating?
must you not be contaminating?
must they not be contaminating? 	must I not have contaminated?
must you not have contaminated?
must he not have contaminated?
must we not have contaminated?
must you not have contaminated?
must they not have contaminated? 	must I not have been contaminating?
must you not have been contaminating?
must he not have been contaminating?
must we not have been contaminating?
must you not have been contaminating?
must they not have been contaminating?