English verb conjugation
COULD RING-FENCE

Regular verb: ring-fence - ring-fenced - ring-fenced

Affirmation

Simple form	V-ing form
I could ring-fence you could ring-fence he could ring-fence we could ring-fence you could ring-fence they could ring-fence	I could be ring-fencing you could be ring-fencing he could be ring-fencing we could be ring-fencing you could be ring-fencing they could be ring-fencing
Perfect	V-ing perfect
I could have ring-fenced you could have ring-fenced he could have ring-fenced we could have ring-fenced you could have ring-fenced they could have ring-fenced	I could have been ring-fencing you could have been ring-fencing he could have been ring-fencing we could have been ring-fencing you could have been ring-fencing they could have been ring-fencing

Negation

Simple form	V-ing form
I couldn't ring-fence you couldn't ring-fence he couldn't ring-fence we couldn't ring-fence you couldn't ring-fence they couldn't ring-fence	I couldn't be ring-fencing you couldn't be ring-fencing he couldn't be ring-fencing we couldn't be ring-fencing you couldn't be ring-fencing they couldn't be ring-fencing
Perfect	V-ing perfect
I couldn't have ring-fenced you couldn't have ring-fenced he couldn't have ring-fenced we couldn't have ring-fenced you couldn't have ring-fenced they couldn't have ring-fenced	I couldn't have been ring-fencing you couldn't have been ring-fencing he couldn't have been ring-fencing we couldn't have been ring-fencing you couldn't have been ring-fencing they couldn't have been ring-fencing

Interrogative form

Simple form	V-ing form
could I ring-fence? could you ring-fence? could he ring-fence? could we ring-fence? could you ring-fence? could they ring-fence?	could I be ring-fencing? could you be ring-fencing? could he be ring-fencing? could we be ring-fencing? could you be ring-fencing? could they be ring-fencing?
Perfect	V-ing perfect
could I have ring-fenced? could you have ring-fenced? could he have ring-fenced? could we have ring-fenced? could you have ring-fenced? could they have ring-fenced?	could I have been ring-fencing? could you have been ring-fencing? could he have been ring-fencing? could we have been ring-fencing? could you have been ring-fencing? could they have been ring-fencing?

Interro-negative form

Simple form	V-ing form
couldn't I ring-fence? couldn't you ring-fence? couldn't he ring-fence? couldn't we ring-fence? couldn't you ring-fence? couldn't they ring-fence?	couldn't I be ring-fencing? couldn't you be ring-fencing? couldn't he be ring-fencing? couldn't we be ring-fencing? couldn't you be ring-fencing? couldn't they be ring-fencing?
Perfect	V-ing perfect
couldn't I have ring-fenced? couldn't you have ring-fenced? couldn't he have ring-fenced? couldn't we have ring-fenced? couldn't you have ring-fenced? couldn't they have ring-fenced?	couldn't I have been ring-fencing? couldn't you have been ring-fencing? couldn't he have been ring-fencing? couldn't we have been ring-fencing? couldn't you have been ring-fencing? couldn't they have been ring-fencing?