Regular verb: persist - persisted - persisted
Simple form | V-ing form |
I could persist you could persist he could persist we could persist you could persist they could persist | I could be persisting you could be persisting he could be persisting we could be persisting you could be persisting they could be persisting |
Perfect | V-ing perfect |
I could have persisted you could have persisted he could have persisted we could have persisted you could have persisted they could have persisted | I could have been persisting you could have been persisting he could have been persisting we could have been persisting you could have been persisting they could have been persisting |
Simple form | V-ing form |
I couldn't persist you couldn't persist he couldn't persist we couldn't persist you couldn't persist they couldn't persist | I couldn't be persisting you couldn't be persisting he couldn't be persisting we couldn't be persisting you couldn't be persisting they couldn't be persisting |
Perfect | V-ing perfect |
I couldn't have persisted you couldn't have persisted he couldn't have persisted we couldn't have persisted you couldn't have persisted they couldn't have persisted | I couldn't have been persisting you couldn't have been persisting he couldn't have been persisting we couldn't have been persisting you couldn't have been persisting they couldn't have been persisting |
Simple form | V-ing form |
could I persist? could you persist? could he persist? could we persist? could you persist? could they persist? | could I be persisting? could you be persisting? could he be persisting? could we be persisting? could you be persisting? could they be persisting? |
Perfect | V-ing perfect |
could I have persisted? could you have persisted? could he have persisted? could we have persisted? could you have persisted? could they have persisted? | could I have been persisting? could you have been persisting? could he have been persisting? could we have been persisting? could you have been persisting? could they have been persisting? |
Simple form | V-ing form |
couldn't I persist? couldn't you persist? couldn't he persist? couldn't we persist? couldn't you persist? couldn't they persist? | couldn't I be persisting? couldn't you be persisting? couldn't he be persisting? couldn't we be persisting? couldn't you be persisting? couldn't they be persisting? |
Perfect | V-ing perfect |
couldn't I have persisted? couldn't you have persisted? couldn't he have persisted? couldn't we have persisted? couldn't you have persisted? couldn't they have persisted? | couldn't I have been persisting? couldn't you have been persisting? couldn't he have been persisting? couldn't we have been persisting? couldn't you have been persisting? couldn't they have been persisting? |