could bungle
Regular verb: bungle - bungled- bungled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could bungle
you could bungle
he could bungle
we could bungle
you could bungle
they could bungle 	I could be bungling
you could be bungling
he could be bungling
we could be bungling
you could be bungling
they could be bungling	I could have bungled
you could have bungled
he could have bungled
we could have bungled
you could have bungled
they could have bungled	I could have been bungling
you could have been bungling
he could have been bungling
we could have been bungling
you could have been bungling
they could have been bungling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't bungle
you couldn't bungle
he couldn't bungle
we couldn't bungle
you couldn't bungle
they couldn't bungle 	I couldn't be bungling
you couldn't be bungling
he couldn't be bungling
we couldn't be bungling
you couldn't be bungling
they couldn't be bungling	I couldn't have bungled
you couldn't have bungled
he couldn't have bungled
we couldn't have bungled
you couldn't have bungled
they couldn't have bungled	I couldn't have been bungling
you couldn't have been bungling
he couldn't have been bungling
we couldn't have been bungling
you couldn't have been bungling
they couldn't have been bungling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I bungle?
could you bungle?
could he bungle?
could we bungle?
could you bungle?
could they bungle? 	could I be bungling?
could you be bungling?
could he be bungling?
could we be bungling?
could you be bungling?
could they be bungling? 	could I have bungled?
could you have bungled?
could he have bungled?
could we have bungled?
could you have bungled?
could they have bungled? 	could I have been bungling?
could you have been bungling?
could he have been bungling?
could we have been bungling?
could you have been bungling?
could they have been bungling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I bungle?
couldn't you bungle?
couldn't he bungle?
couldn't we bungle?
couldn't you bungle?
couldn't they bungle? 	couldn't I be bungling?
couldn't you be bungling?
couldn't he be bungling?
couldn't we be bungling?
couldn't you be bungling?
couldn't they be bungling? 	couldn't I have bungled?
couldn't you have bungled?
couldn't he have bungled?
couldn't we have bungled?
couldn't you have bungled?
couldn't they have bungled? 	couldn't I have been bungling?
couldn't you have been bungling?
couldn't he have been bungling?
couldn't we have been bungling?
couldn't you have been bungling?
couldn't they have been bungling?