could diddle
Regular verb: diddle - diddled- diddled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could diddle
you could diddle
she could diddle
we could diddle
you could diddle
they could diddle 	I could be diddling
you could be diddling
she could be diddling
we could be diddling
you could be diddling
they could be diddling	I could have diddled
you could have diddled
she could have diddled
we could have diddled
you could have diddled
they could have diddled	I could have been diddling
you could have been diddling
she could have been diddling
we could have been diddling
you could have been diddling
they could have been diddling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't diddle
you couldn't diddle
she couldn't diddle
we couldn't diddle
you couldn't diddle
they couldn't diddle 	I couldn't be diddling
you couldn't be diddling
she couldn't be diddling
we couldn't be diddling
you couldn't be diddling
they couldn't be diddling	I couldn't have diddled
you couldn't have diddled
she couldn't have diddled
we couldn't have diddled
you couldn't have diddled
they couldn't have diddled	I couldn't have been diddling
you couldn't have been diddling
she couldn't have been diddling
we couldn't have been diddling
you couldn't have been diddling
they couldn't have been diddling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I diddle?
could you diddle?
could she diddle?
could we diddle?
could you diddle?
could they diddle? 	could I be diddling?
could you be diddling?
could she be diddling?
could we be diddling?
could you be diddling?
could they be diddling? 	could I have diddled?
could you have diddled?
could she have diddled?
could we have diddled?
could you have diddled?
could they have diddled? 	could I have been diddling?
could you have been diddling?
could she have been diddling?
could we have been diddling?
could you have been diddling?
could they have been diddling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I diddle?
couldn't you diddle?
couldn't she diddle?
couldn't we diddle?
couldn't you diddle?
couldn't they diddle? 	couldn't I be diddling?
couldn't you be diddling?
couldn't she be diddling?
couldn't we be diddling?
couldn't you be diddling?
couldn't they be diddling? 	couldn't I have diddled?
couldn't you have diddled?
couldn't she have diddled?
couldn't we have diddled?
couldn't you have diddled?
couldn't they have diddled? 	couldn't I have been diddling?
couldn't you have been diddling?
couldn't she have been diddling?
couldn't we have been diddling?
couldn't you have been diddling?
couldn't they have been diddling?