English verb conjugation
COULD ACCOMPLISH

Regular verb: accomplish - accomplished - accomplished

Affirmation

Simple form	V-ing form
I could accomplish you could accomplish he could accomplish we could accomplish you could accomplish they could accomplish	I could be accomplishing you could be accomplishing he could be accomplishing we could be accomplishing you could be accomplishing they could be accomplishing
Perfect	V-ing perfect
I could have accomplished you could have accomplished he could have accomplished we could have accomplished you could have accomplished they could have accomplished	I could have been accomplishing you could have been accomplishing he could have been accomplishing we could have been accomplishing you could have been accomplishing they could have been accomplishing

Negation

Simple form	V-ing form
I couldn't accomplish you couldn't accomplish he couldn't accomplish we couldn't accomplish you couldn't accomplish they couldn't accomplish	I couldn't be accomplishing you couldn't be accomplishing he couldn't be accomplishing we couldn't be accomplishing you couldn't be accomplishing they couldn't be accomplishing
Perfect	V-ing perfect
I couldn't have accomplished you couldn't have accomplished he couldn't have accomplished we couldn't have accomplished you couldn't have accomplished they couldn't have accomplished	I couldn't have been accomplishing you couldn't have been accomplishing he couldn't have been accomplishing we couldn't have been accomplishing you couldn't have been accomplishing they couldn't have been accomplishing

Interrogative form

Simple form	V-ing form
could I accomplish? could you accomplish? could he accomplish? could we accomplish? could you accomplish? could they accomplish?	could I be accomplishing? could you be accomplishing? could he be accomplishing? could we be accomplishing? could you be accomplishing? could they be accomplishing?
Perfect	V-ing perfect
could I have accomplished? could you have accomplished? could he have accomplished? could we have accomplished? could you have accomplished? could they have accomplished?	could I have been accomplishing? could you have been accomplishing? could he have been accomplishing? could we have been accomplishing? could you have been accomplishing? could they have been accomplishing?

Interro-negative form

Simple form	V-ing form
couldn't I accomplish? couldn't you accomplish? couldn't he accomplish? couldn't we accomplish? couldn't you accomplish? couldn't they accomplish?	couldn't I be accomplishing? couldn't you be accomplishing? couldn't he be accomplishing? couldn't we be accomplishing? couldn't you be accomplishing? couldn't they be accomplishing?
Perfect	V-ing perfect
couldn't I have accomplished? couldn't you have accomplished? couldn't he have accomplished? couldn't we have accomplished? couldn't you have accomplished? couldn't they have accomplished?	couldn't I have been accomplishing? couldn't you have been accomplishing? couldn't he have been accomplishing? couldn't we have been accomplishing? couldn't you have been accomplishing? couldn't they have been accomplishing?