can contaminate
Regular verb: contaminate - contaminated- contaminated

Affirmation 	
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I can contaminate
you can contaminate
she can contaminate
we can contaminate
you can contaminate
they can contaminate 	I can be contaminating
you can be contaminating
she can be contaminating
we can be contaminating
you can be contaminating
they can be contaminating	I can have contaminated
you can have contaminated
she can have contaminated
we can have contaminated
you can have contaminated
they can have contaminated	I can have been contaminating
you can have been contaminating
she can have been contaminating
we can have been contaminating
you can have been contaminating
they can have been contaminating	

Negation 	
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I can't contaminate
you can't contaminate
she can't contaminate
we can't contaminate
you can't contaminate
they can't contaminate 	I can't be contaminating
you can't be contaminating
she can't be contaminating
we can't be contaminating
you can't be contaminating
they can't be contaminating	I can't have contaminated
you can't have contaminated
she can't have contaminated
we can't have contaminated
you can't have contaminated
they can't have contaminated	I can't have been contaminating
you can't have been contaminating
she can't have been contaminating
we can't have been contaminating
you can't have been contaminating
they can't have been contaminating	

Interrogative form 	
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can I contaminate?
can you contaminate?
can she contaminate?
can we contaminate?
can you contaminate?
can they contaminate? 	can I be contaminating?
can you be contaminating?
can she be contaminating?
can we be contaminating?
can you be contaminating?
can they be contaminating? 	can I have contaminated?
can you have contaminated?
can she have contaminated?
can we have contaminated?
can you have contaminated?
can they have contaminated? 	can I have been contaminating?
can you have been contaminating?
can she have been contaminating?
can we have been contaminating?
can you have been contaminating?
can they have been contaminating? 	

Interro-negative form 	
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can't I contaminate?
can't you contaminate?
can't she contaminate?
can't we contaminate?
can't you contaminate?
can't they contaminate? 	can't I be contaminating?
can't you be contaminating?
can't she be contaminating?
can't we be contaminating?
can't you be contaminating?
can't they be contaminating? 	can't I have contaminated?
can't you have contaminated?
can't she have contaminated?
can't we have contaminated?
can't you have contaminated?
can't they have contaminated? 	can't I have been contaminating?
can't you have been contaminating?
can't she have been contaminating?
can't we have been contaminating?
can't you have been contaminating?
can't they have been contaminating?