could fable
Regular verb: fable - fabled- fabled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could fable
you could fable
she could fable
we could fable
you could fable
they could fable 	I could be fabling
you could be fabling
she could be fabling
we could be fabling
you could be fabling
they could be fabling	I could have fabled
you could have fabled
she could have fabled
we could have fabled
you could have fabled
they could have fabled	I could have been fabling
you could have been fabling
she could have been fabling
we could have been fabling
you could have been fabling
they could have been fabling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't fable
you couldn't fable
she couldn't fable
we couldn't fable
you couldn't fable
they couldn't fable 	I couldn't be fabling
you couldn't be fabling
she couldn't be fabling
we couldn't be fabling
you couldn't be fabling
they couldn't be fabling	I couldn't have fabled
you couldn't have fabled
she couldn't have fabled
we couldn't have fabled
you couldn't have fabled
they couldn't have fabled	I couldn't have been fabling
you couldn't have been fabling
she couldn't have been fabling
we couldn't have been fabling
you couldn't have been fabling
they couldn't have been fabling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I fable?
could you fable?
could she fable?
could we fable?
could you fable?
could they fable? 	could I be fabling?
could you be fabling?
could she be fabling?
could we be fabling?
could you be fabling?
could they be fabling? 	could I have fabled?
could you have fabled?
could she have fabled?
could we have fabled?
could you have fabled?
could they have fabled? 	could I have been fabling?
could you have been fabling?
could she have been fabling?
could we have been fabling?
could you have been fabling?
could they have been fabling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I fable?
couldn't you fable?
couldn't she fable?
couldn't we fable?
couldn't you fable?
couldn't they fable? 	couldn't I be fabling?
couldn't you be fabling?
couldn't she be fabling?
couldn't we be fabling?
couldn't you be fabling?
couldn't they be fabling? 	couldn't I have fabled?
couldn't you have fabled?
couldn't she have fabled?
couldn't we have fabled?
couldn't you have fabled?
couldn't they have fabled? 	couldn't I have been fabling?
couldn't you have been fabling?
couldn't she have been fabling?
couldn't we have been fabling?
couldn't you have been fabling?
couldn't they have been fabling?