could paraffin
Regular verb: paraffin - paraffined- paraffined

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could paraffin
you could paraffin
she could paraffin
we could paraffin
you could paraffin
they could paraffin 	I could be paraffining
you could be paraffining
she could be paraffining
we could be paraffining
you could be paraffining
they could be paraffining	I could have paraffined
you could have paraffined
she could have paraffined
we could have paraffined
you could have paraffined
they could have paraffined	I could have been paraffining
you could have been paraffining
she could have been paraffining
we could have been paraffining
you could have been paraffining
they could have been paraffining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not paraffin
you could not paraffin
she could not paraffin
we could not paraffin
you could not paraffin
they could not paraffin 	I could not be paraffining
you could not be paraffining
she could not be paraffining
we could not be paraffining
you could not be paraffining
they could not be paraffining	I could not have paraffined
you could not have paraffined
she could not have paraffined
we could not have paraffined
you could not have paraffined
they could not have paraffined	I could not have been paraffining
you could not have been paraffining
she could not have been paraffining
we could not have been paraffining
you could not have been paraffining
they could not have been paraffining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I paraffin?
could you paraffin?
could she paraffin?
could we paraffin?
could you paraffin?
could they paraffin? 	could I be paraffining?
could you be paraffining?
could she be paraffining?
could we be paraffining?
could you be paraffining?
could they be paraffining? 	could I have paraffined?
could you have paraffined?
could she have paraffined?
could we have paraffined?
could you have paraffined?
could they have paraffined? 	could I have been paraffining?
could you have been paraffining?
could she have been paraffining?
could we have been paraffining?
could you have been paraffining?
could they have been paraffining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not paraffin?
could you not paraffin?
could she not paraffin?
could we not paraffin?
could you not paraffin?
could they not paraffin? 	could I not be paraffining?
could you not be paraffining?
could she not be paraffining?
could we not be paraffining?
could you not be paraffining?
could they not be paraffining? 	could I not have paraffined?
could you not have paraffined?
could she not have paraffined?
could we not have paraffined?
could you not have paraffined?
could they not have paraffined? 	could I not have been paraffining?
could you not have been paraffining?
could she not have been paraffining?
could we not have been paraffining?
could you not have been paraffining?
could they not have been paraffining?