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