could deskill
Regular verb: deskill - deskilled- deskilled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could deskill
you could deskill
he could deskill
we could deskill
you could deskill
they could deskill 	I could be deskilling
you could be deskilling
he could be deskilling
we could be deskilling
you could be deskilling
they could be deskilling	I could have deskilled
you could have deskilled
he could have deskilled
we could have deskilled
you could have deskilled
they could have deskilled	I could have been deskilling
you could have been deskilling
he could have been deskilling
we could have been deskilling
you could have been deskilling
they could have been deskilling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not deskill
you could not deskill
he could not deskill
we could not deskill
you could not deskill
they could not deskill 	I could not be deskilling
you could not be deskilling
he could not be deskilling
we could not be deskilling
you could not be deskilling
they could not be deskilling	I could not have deskilled
you could not have deskilled
he could not have deskilled
we could not have deskilled
you could not have deskilled
they could not have deskilled	I could not have been deskilling
you could not have been deskilling
he could not have been deskilling
we could not have been deskilling
you could not have been deskilling
they could not have been deskilling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I deskill?
could you deskill?
could he deskill?
could we deskill?
could you deskill?
could they deskill? 	could I be deskilling?
could you be deskilling?
could he be deskilling?
could we be deskilling?
could you be deskilling?
could they be deskilling? 	could I have deskilled?
could you have deskilled?
could he have deskilled?
could we have deskilled?
could you have deskilled?
could they have deskilled? 	could I have been deskilling?
could you have been deskilling?
could he have been deskilling?
could we have been deskilling?
could you have been deskilling?
could they have been deskilling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not deskill?
could you not deskill?
could he not deskill?
could we not deskill?
could you not deskill?
could they not deskill? 	could I not be deskilling?
could you not be deskilling?
could he not be deskilling?
could we not be deskilling?
could you not be deskilling?
could they not be deskilling? 	could I not have deskilled?
could you not have deskilled?
could he not have deskilled?
could we not have deskilled?
could you not have deskilled?
could they not have deskilled? 	could I not have been deskilling?
could you not have been deskilling?
could he not have been deskilling?
could we not have been deskilling?
could you not have been deskilling?
could they not have been deskilling?