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