could carboxylate
Regular verb: carboxylate - carboxylated- carboxylated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could carboxylate
you could carboxylate
he could carboxylate
we could carboxylate
you could carboxylate
they could carboxylate 	I could be carboxylating
you could be carboxylating
he could be carboxylating
we could be carboxylating
you could be carboxylating
they could be carboxylating	I could have carboxylated
you could have carboxylated
he could have carboxylated
we could have carboxylated
you could have carboxylated
they could have carboxylated	I could have been carboxylating
you could have been carboxylating
he could have been carboxylating
we could have been carboxylating
you could have been carboxylating
they could have been carboxylating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not carboxylate
you could not carboxylate
he could not carboxylate
we could not carboxylate
you could not carboxylate
they could not carboxylate 	I could not be carboxylating
you could not be carboxylating
he could not be carboxylating
we could not be carboxylating
you could not be carboxylating
they could not be carboxylating	I could not have carboxylated
you could not have carboxylated
he could not have carboxylated
we could not have carboxylated
you could not have carboxylated
they could not have carboxylated	I could not have been carboxylating
you could not have been carboxylating
he could not have been carboxylating
we could not have been carboxylating
you could not have been carboxylating
they could not have been carboxylating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I carboxylate?
could you carboxylate?
could he carboxylate?
could we carboxylate?
could you carboxylate?
could they carboxylate? 	could I be carboxylating?
could you be carboxylating?
could he be carboxylating?
could we be carboxylating?
could you be carboxylating?
could they be carboxylating? 	could I have carboxylated?
could you have carboxylated?
could he have carboxylated?
could we have carboxylated?
could you have carboxylated?
could they have carboxylated? 	could I have been carboxylating?
could you have been carboxylating?
could he have been carboxylating?
could we have been carboxylating?
could you have been carboxylating?
could they have been carboxylating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not carboxylate?
could you not carboxylate?
could he not carboxylate?
could we not carboxylate?
could you not carboxylate?
could they not carboxylate? 	could I not be carboxylating?
could you not be carboxylating?
could he not be carboxylating?
could we not be carboxylating?
could you not be carboxylating?
could they not be carboxylating? 	could I not have carboxylated?
could you not have carboxylated?
could he not have carboxylated?
could we not have carboxylated?
could you not have carboxylated?
could they not have carboxylated? 	could I not have been carboxylating?
could you not have been carboxylating?
could he not have been carboxylating?
could we not have been carboxylating?
could you not have been carboxylating?
could they not have been carboxylating?