could prededuct
Regular verb: prededuct - prededucted- prededucted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could prededuct
you could prededuct
she could prededuct
we could prededuct
you could prededuct
they could prededuct 	I could be prededucting
you could be prededucting
she could be prededucting
we could be prededucting
you could be prededucting
they could be prededucting	I could have prededucted
you could have prededucted
she could have prededucted
we could have prededucted
you could have prededucted
they could have prededucted	I could have been prededucting
you could have been prededucting
she could have been prededucting
we could have been prededucting
you could have been prededucting
they could have been prededucting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't prededuct
you couldn't prededuct
she couldn't prededuct
we couldn't prededuct
you couldn't prededuct
they couldn't prededuct 	I couldn't be prededucting
you couldn't be prededucting
she couldn't be prededucting
we couldn't be prededucting
you couldn't be prededucting
they couldn't be prededucting	I couldn't have prededucted
you couldn't have prededucted
she couldn't have prededucted
we couldn't have prededucted
you couldn't have prededucted
they couldn't have prededucted	I couldn't have been prededucting
you couldn't have been prededucting
she couldn't have been prededucting
we couldn't have been prededucting
you couldn't have been prededucting
they couldn't have been prededucting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I prededuct?
could you prededuct?
could she prededuct?
could we prededuct?
could you prededuct?
could they prededuct? 	could I be prededucting?
could you be prededucting?
could she be prededucting?
could we be prededucting?
could you be prededucting?
could they be prededucting? 	could I have prededucted?
could you have prededucted?
could she have prededucted?
could we have prededucted?
could you have prededucted?
could they have prededucted? 	could I have been prededucting?
could you have been prededucting?
could she have been prededucting?
could we have been prededucting?
could you have been prededucting?
could they have been prededucting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I prededuct?
couldn't you prededuct?
couldn't she prededuct?
couldn't we prededuct?
couldn't you prededuct?
couldn't they prededuct? 	couldn't I be prededucting?
couldn't you be prededucting?
couldn't she be prededucting?
couldn't we be prededucting?
couldn't you be prededucting?
couldn't they be prededucting? 	couldn't I have prededucted?
couldn't you have prededucted?
couldn't she have prededucted?
couldn't we have prededucted?
couldn't you have prededucted?
couldn't they have prededucted? 	couldn't I have been prededucting?
couldn't you have been prededucting?
couldn't she have been prededucting?
couldn't we have been prededucting?
couldn't you have been prededucting?
couldn't they have been prededucting?