could jape
Regular verb: jape - japed- japed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could jape
you could jape
he could jape
we could jape
you could jape
they could jape 	I could be japing
you could be japing
he could be japing
we could be japing
you could be japing
they could be japing	I could have japed
you could have japed
he could have japed
we could have japed
you could have japed
they could have japed	I could have been japing
you could have been japing
he could have been japing
we could have been japing
you could have been japing
they could have been japing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't jape
you couldn't jape
he couldn't jape
we couldn't jape
you couldn't jape
they couldn't jape 	I couldn't be japing
you couldn't be japing
he couldn't be japing
we couldn't be japing
you couldn't be japing
they couldn't be japing	I couldn't have japed
you couldn't have japed
he couldn't have japed
we couldn't have japed
you couldn't have japed
they couldn't have japed	I couldn't have been japing
you couldn't have been japing
he couldn't have been japing
we couldn't have been japing
you couldn't have been japing
they couldn't have been japing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I jape?
could you jape?
could he jape?
could we jape?
could you jape?
could they jape? 	could I be japing?
could you be japing?
could he be japing?
could we be japing?
could you be japing?
could they be japing? 	could I have japed?
could you have japed?
could he have japed?
could we have japed?
could you have japed?
could they have japed? 	could I have been japing?
could you have been japing?
could he have been japing?
could we have been japing?
could you have been japing?
could they have been japing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I jape?
couldn't you jape?
couldn't he jape?
couldn't we jape?
couldn't you jape?
couldn't they jape? 	couldn't I be japing?
couldn't you be japing?
couldn't he be japing?
couldn't we be japing?
couldn't you be japing?
couldn't they be japing? 	couldn't I have japed?
couldn't you have japed?
couldn't he have japed?
couldn't we have japed?
couldn't you have japed?
couldn't they have japed? 	couldn't I have been japing?
couldn't you have been japing?
couldn't he have been japing?
couldn't we have been japing?
couldn't you have been japing?
couldn't they have been japing?