could disc
Regular verb: disc - disced- disced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could disc
you could disc
he could disc
we could disc
you could disc
they could disc 	I could be discing
you could be discing
he could be discing
we could be discing
you could be discing
they could be discing	I could have disced
you could have disced
he could have disced
we could have disced
you could have disced
they could have disced	I could have been discing
you could have been discing
he could have been discing
we could have been discing
you could have been discing
they could have been discing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not disc
you could not disc
he could not disc
we could not disc
you could not disc
they could not disc 	I could not be discing
you could not be discing
he could not be discing
we could not be discing
you could not be discing
they could not be discing	I could not have disced
you could not have disced
he could not have disced
we could not have disced
you could not have disced
they could not have disced	I could not have been discing
you could not have been discing
he could not have been discing
we could not have been discing
you could not have been discing
they could not have been discing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I disc?
could you disc?
could he disc?
could we disc?
could you disc?
could they disc? 	could I be discing?
could you be discing?
could he be discing?
could we be discing?
could you be discing?
could they be discing? 	could I have disced?
could you have disced?
could he have disced?
could we have disced?
could you have disced?
could they have disced? 	could I have been discing?
could you have been discing?
could he have been discing?
could we have been discing?
could you have been discing?
could they have been discing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not disc?
could you not disc?
could he not disc?
could we not disc?
could you not disc?
could they not disc? 	could I not be discing?
could you not be discing?
could he not be discing?
could we not be discing?
could you not be discing?
could they not be discing? 	could I not have disced?
could you not have disced?
could he not have disced?
could we not have disced?
could you not have disced?
could they not have disced? 	could I not have been discing?
could you not have been discing?
could he not have been discing?
could we not have been discing?
could you not have been discing?
could they not have been discing?