could class
Regular verb: class - classed- classed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could class
you could class
he could class
we could class
you could class
they could class 	I could be classing
you could be classing
he could be classing
we could be classing
you could be classing
they could be classing	I could have classed
you could have classed
he could have classed
we could have classed
you could have classed
they could have classed	I could have been classing
you could have been classing
he could have been classing
we could have been classing
you could have been classing
they could have been classing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not class
you could not class
he could not class
we could not class
you could not class
they could not class 	I could not be classing
you could not be classing
he could not be classing
we could not be classing
you could not be classing
they could not be classing	I could not have classed
you could not have classed
he could not have classed
we could not have classed
you could not have classed
they could not have classed	I could not have been classing
you could not have been classing
he could not have been classing
we could not have been classing
you could not have been classing
they could not have been classing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I class?
could you class?
could he class?
could we class?
could you class?
could they class? 	could I be classing?
could you be classing?
could he be classing?
could we be classing?
could you be classing?
could they be classing? 	could I have classed?
could you have classed?
could he have classed?
could we have classed?
could you have classed?
could they have classed? 	could I have been classing?
could you have been classing?
could he have been classing?
could we have been classing?
could you have been classing?
could they have been classing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not class?
could you not class?
could he not class?
could we not class?
could you not class?
could they not class? 	could I not be classing?
could you not be classing?
could he not be classing?
could we not be classing?
could you not be classing?
could they not be classing? 	could I not have classed?
could you not have classed?
could he not have classed?
could we not have classed?
could you not have classed?
could they not have classed? 	could I not have been classing?
could you not have been classing?
could he not have been classing?
could we not have been classing?
could you not have been classing?
could they not have been classing?