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