could subduct
Regular verb: subduct - subducted- subducted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could subduct
you could subduct
he could subduct
we could subduct
you could subduct
they could subduct 	I could be subducting
you could be subducting
he could be subducting
we could be subducting
you could be subducting
they could be subducting	I could have subducted
you could have subducted
he could have subducted
we could have subducted
you could have subducted
they could have subducted	I could have been subducting
you could have been subducting
he could have been subducting
we could have been subducting
you could have been subducting
they could have been subducting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't subduct
you couldn't subduct
he couldn't subduct
we couldn't subduct
you couldn't subduct
they couldn't subduct 	I couldn't be subducting
you couldn't be subducting
he couldn't be subducting
we couldn't be subducting
you couldn't be subducting
they couldn't be subducting	I couldn't have subducted
you couldn't have subducted
he couldn't have subducted
we couldn't have subducted
you couldn't have subducted
they couldn't have subducted	I couldn't have been subducting
you couldn't have been subducting
he couldn't have been subducting
we couldn't have been subducting
you couldn't have been subducting
they couldn't have been subducting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I subduct?
could you subduct?
could he subduct?
could we subduct?
could you subduct?
could they subduct? 	could I be subducting?
could you be subducting?
could he be subducting?
could we be subducting?
could you be subducting?
could they be subducting? 	could I have subducted?
could you have subducted?
could he have subducted?
could we have subducted?
could you have subducted?
could they have subducted? 	could I have been subducting?
could you have been subducting?
could he have been subducting?
could we have been subducting?
could you have been subducting?
could they have been subducting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I subduct?
couldn't you subduct?
couldn't he subduct?
couldn't we subduct?
couldn't you subduct?
couldn't they subduct? 	couldn't I be subducting?
couldn't you be subducting?
couldn't he be subducting?
couldn't we be subducting?
couldn't you be subducting?
couldn't they be subducting? 	couldn't I have subducted?
couldn't you have subducted?
couldn't he have subducted?
couldn't we have subducted?
couldn't you have subducted?
couldn't they have subducted? 	couldn't I have been subducting?
couldn't you have been subducting?
couldn't he have been subducting?
couldn't we have been subducting?
couldn't you have been subducting?
couldn't they have been subducting?