could ill-use
Regular verb: ill-use - ill-used- ill-used

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could ill-use
you could ill-use
she could ill-use
we could ill-use
you could ill-use
they could ill-use 	I could be ill-using
you could be ill-using
she could be ill-using
we could be ill-using
you could be ill-using
they could be ill-using	I could have ill-used
you could have ill-used
she could have ill-used
we could have ill-used
you could have ill-used
they could have ill-used	I could have been ill-using
you could have been ill-using
she could have been ill-using
we could have been ill-using
you could have been ill-using
they could have been ill-using	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't ill-use
you couldn't ill-use
she couldn't ill-use
we couldn't ill-use
you couldn't ill-use
they couldn't ill-use 	I couldn't be ill-using
you couldn't be ill-using
she couldn't be ill-using
we couldn't be ill-using
you couldn't be ill-using
they couldn't be ill-using	I couldn't have ill-used
you couldn't have ill-used
she couldn't have ill-used
we couldn't have ill-used
you couldn't have ill-used
they couldn't have ill-used	I couldn't have been ill-using
you couldn't have been ill-using
she couldn't have been ill-using
we couldn't have been ill-using
you couldn't have been ill-using
they couldn't have been ill-using	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I ill-use?
could you ill-use?
could she ill-use?
could we ill-use?
could you ill-use?
could they ill-use? 	could I be ill-using?
could you be ill-using?
could she be ill-using?
could we be ill-using?
could you be ill-using?
could they be ill-using? 	could I have ill-used?
could you have ill-used?
could she have ill-used?
could we have ill-used?
could you have ill-used?
could they have ill-used? 	could I have been ill-using?
could you have been ill-using?
could she have been ill-using?
could we have been ill-using?
could you have been ill-using?
could they have been ill-using? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I ill-use?
couldn't you ill-use?
couldn't she ill-use?
couldn't we ill-use?
couldn't you ill-use?
couldn't they ill-use? 	couldn't I be ill-using?
couldn't you be ill-using?
couldn't she be ill-using?
couldn't we be ill-using?
couldn't you be ill-using?
couldn't they be ill-using? 	couldn't I have ill-used?
couldn't you have ill-used?
couldn't she have ill-used?
couldn't we have ill-used?
couldn't you have ill-used?
couldn't they have ill-used? 	couldn't I have been ill-using?
couldn't you have been ill-using?
couldn't she have been ill-using?
couldn't we have been ill-using?
couldn't you have been ill-using?
couldn't they have been ill-using?