could instill
Regular verb: instill - instilled- instilled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could instill
you could instill
he could instill
we could instill
you could instill
they could instill 	I could be instilling
you could be instilling
he could be instilling
we could be instilling
you could be instilling
they could be instilling	I could have instilled
you could have instilled
he could have instilled
we could have instilled
you could have instilled
they could have instilled	I could have been instilling
you could have been instilling
he could have been instilling
we could have been instilling
you could have been instilling
they could have been instilling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't instill
you couldn't instill
he couldn't instill
we couldn't instill
you couldn't instill
they couldn't instill 	I couldn't be instilling
you couldn't be instilling
he couldn't be instilling
we couldn't be instilling
you couldn't be instilling
they couldn't be instilling	I couldn't have instilled
you couldn't have instilled
he couldn't have instilled
we couldn't have instilled
you couldn't have instilled
they couldn't have instilled	I couldn't have been instilling
you couldn't have been instilling
he couldn't have been instilling
we couldn't have been instilling
you couldn't have been instilling
they couldn't have been instilling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I instill?
could you instill?
could he instill?
could we instill?
could you instill?
could they instill? 	could I be instilling?
could you be instilling?
could he be instilling?
could we be instilling?
could you be instilling?
could they be instilling? 	could I have instilled?
could you have instilled?
could he have instilled?
could we have instilled?
could you have instilled?
could they have instilled? 	could I have been instilling?
could you have been instilling?
could he have been instilling?
could we have been instilling?
could you have been instilling?
could they have been instilling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I instill?
couldn't you instill?
couldn't he instill?
couldn't we instill?
couldn't you instill?
couldn't they instill? 	couldn't I be instilling?
couldn't you be instilling?
couldn't he be instilling?
couldn't we be instilling?
couldn't you be instilling?
couldn't they be instilling? 	couldn't I have instilled?
couldn't you have instilled?
couldn't he have instilled?
couldn't we have instilled?
couldn't you have instilled?
couldn't they have instilled? 	couldn't I have been instilling?
couldn't you have been instilling?
couldn't he have been instilling?
couldn't we have been instilling?
couldn't you have been instilling?
couldn't they have been instilling?