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