could herd
Regular verb: herd - herded- herded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could herd
you could herd
he could herd
we could herd
you could herd
they could herd 	I could be herding
you could be herding
he could be herding
we could be herding
you could be herding
they could be herding	I could have herded
you could have herded
he could have herded
we could have herded
you could have herded
they could have herded	I could have been herding
you could have been herding
he could have been herding
we could have been herding
you could have been herding
they could have been herding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't herd
you couldn't herd
he couldn't herd
we couldn't herd
you couldn't herd
they couldn't herd 	I couldn't be herding
you couldn't be herding
he couldn't be herding
we couldn't be herding
you couldn't be herding
they couldn't be herding	I couldn't have herded
you couldn't have herded
he couldn't have herded
we couldn't have herded
you couldn't have herded
they couldn't have herded	I couldn't have been herding
you couldn't have been herding
he couldn't have been herding
we couldn't have been herding
you couldn't have been herding
they couldn't have been herding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I herd?
could you herd?
could he herd?
could we herd?
could you herd?
could they herd? 	could I be herding?
could you be herding?
could he be herding?
could we be herding?
could you be herding?
could they be herding? 	could I have herded?
could you have herded?
could he have herded?
could we have herded?
could you have herded?
could they have herded? 	could I have been herding?
could you have been herding?
could he have been herding?
could we have been herding?
could you have been herding?
could they have been herding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I herd?
couldn't you herd?
couldn't he herd?
couldn't we herd?
couldn't you herd?
couldn't they herd? 	couldn't I be herding?
couldn't you be herding?
couldn't he be herding?
couldn't we be herding?
couldn't you be herding?
couldn't they be herding? 	couldn't I have herded?
couldn't you have herded?
couldn't he have herded?
couldn't we have herded?
couldn't you have herded?
couldn't they have herded? 	couldn't I have been herding?
couldn't you have been herding?
couldn't he have been herding?
couldn't we have been herding?
couldn't you have been herding?
couldn't they have been herding?