I could batch you could batch he could batch we could batch you could batch they could batch
V-ing form
I could be batching you could be batching he could be batching we could be batching you could be batching they could be batching
Perfect
I could have batched you could have batched he could have batched we could have batched you could have batched they could have batched
V-ing perfect
I could have been batching you could have been batching he could have been batching we could have been batching you could have been batching they could have been batching
Negation
Simple form
I couldn't batch you couldn't batch he couldn't batch we couldn't batch you couldn't batch they couldn't batch
V-ing form
I couldn't be batching you couldn't be batching he couldn't be batching we couldn't be batching you couldn't be batching they couldn't be batching
Perfect
I couldn't have batched you couldn't have batched he couldn't have batched we couldn't have batched you couldn't have batched they couldn't have batched
V-ing perfect
I couldn't have been batching you couldn't have been batching he couldn't have been batching we couldn't have been batching you couldn't have been batching they couldn't have been batching
Interrogative form
Simple form
could I batch? could you batch? could he batch? could we batch? could you batch? could they batch?
V-ing form
could I be batching? could you be batching? could he be batching? could we be batching? could you be batching? could they be batching?
Perfect
could I have batched? could you have batched? could he have batched? could we have batched? could you have batched? could they have batched?
V-ing perfect
could I have been batching? could you have been batching? could he have been batching? could we have been batching? could you have been batching? could they have been batching?
Interro-negative form
Simple form
couldn't I batch? couldn't you batch? couldn't he batch? couldn't we batch? couldn't you batch? couldn't they batch?
V-ing form
couldn't I be batching? couldn't you be batching? couldn't he be batching? couldn't we be batching? couldn't you be batching? couldn't they be batching?
Perfect
couldn't I have batched? couldn't you have batched? couldn't he have batched? couldn't we have batched? couldn't you have batched? couldn't they have batched?
V-ing perfect
couldn't I have been batching? couldn't you have been batching? couldn't he have been batching? couldn't we have been batching? couldn't you have been batching? couldn't they have been batching?