could intersperse
Regular verb: intersperse - interspersed- interspersed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could intersperse
you could intersperse
she could intersperse
we could intersperse
you could intersperse
they could intersperse 	I could be interspersing
you could be interspersing
she could be interspersing
we could be interspersing
you could be interspersing
they could be interspersing	I could have interspersed
you could have interspersed
she could have interspersed
we could have interspersed
you could have interspersed
they could have interspersed	I could have been interspersing
you could have been interspersing
she could have been interspersing
we could have been interspersing
you could have been interspersing
they could have been interspersing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't intersperse
you couldn't intersperse
she couldn't intersperse
we couldn't intersperse
you couldn't intersperse
they couldn't intersperse 	I couldn't be interspersing
you couldn't be interspersing
she couldn't be interspersing
we couldn't be interspersing
you couldn't be interspersing
they couldn't be interspersing	I couldn't have interspersed
you couldn't have interspersed
she couldn't have interspersed
we couldn't have interspersed
you couldn't have interspersed
they couldn't have interspersed	I couldn't have been interspersing
you couldn't have been interspersing
she couldn't have been interspersing
we couldn't have been interspersing
you couldn't have been interspersing
they couldn't have been interspersing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I intersperse?
could you intersperse?
could she intersperse?
could we intersperse?
could you intersperse?
could they intersperse? 	could I be interspersing?
could you be interspersing?
could she be interspersing?
could we be interspersing?
could you be interspersing?
could they be interspersing? 	could I have interspersed?
could you have interspersed?
could she have interspersed?
could we have interspersed?
could you have interspersed?
could they have interspersed? 	could I have been interspersing?
could you have been interspersing?
could she have been interspersing?
could we have been interspersing?
could you have been interspersing?
could they have been interspersing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I intersperse?
couldn't you intersperse?
couldn't she intersperse?
couldn't we intersperse?
couldn't you intersperse?
couldn't they intersperse? 	couldn't I be interspersing?
couldn't you be interspersing?
couldn't she be interspersing?
couldn't we be interspersing?
couldn't you be interspersing?
couldn't they be interspersing? 	couldn't I have interspersed?
couldn't you have interspersed?
couldn't she have interspersed?
couldn't we have interspersed?
couldn't you have interspersed?
couldn't they have interspersed? 	couldn't I have been interspersing?
couldn't you have been interspersing?
couldn't she have been interspersing?
couldn't we have been interspersing?
couldn't you have been interspersing?
couldn't they have been interspersing?