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