could rubberize
Regular verb: rubberize - rubberized- rubberized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could rubberize
you could rubberize
he could rubberize
we could rubberize
you could rubberize
they could rubberize 	I could be rubberizing
you could be rubberizing
he could be rubberizing
we could be rubberizing
you could be rubberizing
they could be rubberizing	I could have rubberized
you could have rubberized
he could have rubberized
we could have rubberized
you could have rubberized
they could have rubberized	I could have been rubberizing
you could have been rubberizing
he could have been rubberizing
we could have been rubberizing
you could have been rubberizing
they could have been rubberizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not rubberize
you could not rubberize
he could not rubberize
we could not rubberize
you could not rubberize
they could not rubberize 	I could not be rubberizing
you could not be rubberizing
he could not be rubberizing
we could not be rubberizing
you could not be rubberizing
they could not be rubberizing	I could not have rubberized
you could not have rubberized
he could not have rubberized
we could not have rubberized
you could not have rubberized
they could not have rubberized	I could not have been rubberizing
you could not have been rubberizing
he could not have been rubberizing
we could not have been rubberizing
you could not have been rubberizing
they could not have been rubberizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I rubberize?
could you rubberize?
could he rubberize?
could we rubberize?
could you rubberize?
could they rubberize? 	could I be rubberizing?
could you be rubberizing?
could he be rubberizing?
could we be rubberizing?
could you be rubberizing?
could they be rubberizing? 	could I have rubberized?
could you have rubberized?
could he have rubberized?
could we have rubberized?
could you have rubberized?
could they have rubberized? 	could I have been rubberizing?
could you have been rubberizing?
could he have been rubberizing?
could we have been rubberizing?
could you have been rubberizing?
could they have been rubberizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not rubberize?
could you not rubberize?
could he not rubberize?
could we not rubberize?
could you not rubberize?
could they not rubberize? 	could I not be rubberizing?
could you not be rubberizing?
could he not be rubberizing?
could we not be rubberizing?
could you not be rubberizing?
could they not be rubberizing? 	could I not have rubberized?
could you not have rubberized?
could he not have rubberized?
could we not have rubberized?
could you not have rubberized?
could they not have rubberized? 	could I not have been rubberizing?
could you not have been rubberizing?
could he not have been rubberizing?
could we not have been rubberizing?
could you not have been rubberizing?
could they not have been rubberizing?