could fiddle
Regular verb: fiddle - fiddled- fiddled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could fiddle
you could fiddle
he could fiddle
we could fiddle
you could fiddle
they could fiddle 	I could be fiddling
you could be fiddling
he could be fiddling
we could be fiddling
you could be fiddling
they could be fiddling	I could have fiddled
you could have fiddled
he could have fiddled
we could have fiddled
you could have fiddled
they could have fiddled	I could have been fiddling
you could have been fiddling
he could have been fiddling
we could have been fiddling
you could have been fiddling
they could have been fiddling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't fiddle
you couldn't fiddle
he couldn't fiddle
we couldn't fiddle
you couldn't fiddle
they couldn't fiddle 	I couldn't be fiddling
you couldn't be fiddling
he couldn't be fiddling
we couldn't be fiddling
you couldn't be fiddling
they couldn't be fiddling	I couldn't have fiddled
you couldn't have fiddled
he couldn't have fiddled
we couldn't have fiddled
you couldn't have fiddled
they couldn't have fiddled	I couldn't have been fiddling
you couldn't have been fiddling
he couldn't have been fiddling
we couldn't have been fiddling
you couldn't have been fiddling
they couldn't have been fiddling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I fiddle?
could you fiddle?
could he fiddle?
could we fiddle?
could you fiddle?
could they fiddle? 	could I be fiddling?
could you be fiddling?
could he be fiddling?
could we be fiddling?
could you be fiddling?
could they be fiddling? 	could I have fiddled?
could you have fiddled?
could he have fiddled?
could we have fiddled?
could you have fiddled?
could they have fiddled? 	could I have been fiddling?
could you have been fiddling?
could he have been fiddling?
could we have been fiddling?
could you have been fiddling?
could they have been fiddling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I fiddle?
couldn't you fiddle?
couldn't he fiddle?
couldn't we fiddle?
couldn't you fiddle?
couldn't they fiddle? 	couldn't I be fiddling?
couldn't you be fiddling?
couldn't he be fiddling?
couldn't we be fiddling?
couldn't you be fiddling?
couldn't they be fiddling? 	couldn't I have fiddled?
couldn't you have fiddled?
couldn't he have fiddled?
couldn't we have fiddled?
couldn't you have fiddled?
couldn't they have fiddled? 	couldn't I have been fiddling?
couldn't you have been fiddling?
couldn't he have been fiddling?
couldn't we have been fiddling?
couldn't you have been fiddling?
couldn't they have been fiddling?