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