Regular verb: combine - combined - combined
Simple form | V-ing form |
I can combine you can combine he can combine we can combine you can combine they can combine | I can be combining you can be combining he can be combining we can be combining you can be combining they can be combining |
Perfect | V-ing perfect |
I can have combined you can have combined he can have combined we can have combined you can have combined they can have combined | I can have been combining you can have been combining he can have been combining we can have been combining you can have been combining they can have been combining |
Simple form | V-ing form |
I can't combine you can't combine he can't combine we can't combine you can't combine they can't combine | I can't be combining you can't be combining he can't be combining we can't be combining you can't be combining they can't be combining |
Perfect | V-ing perfect |
I can't have combined you can't have combined he can't have combined we can't have combined you can't have combined they can't have combined | I can't have been combining you can't have been combining he can't have been combining we can't have been combining you can't have been combining they can't have been combining |
Simple form | V-ing form |
can I combine? can you combine? can he combine? can we combine? can you combine? can they combine? | can I be combining? can you be combining? can he be combining? can we be combining? can you be combining? can they be combining? |
Perfect | V-ing perfect |
can I have combined? can you have combined? can he have combined? can we have combined? can you have combined? can they have combined? | can I have been combining? can you have been combining? can he have been combining? can we have been combining? can you have been combining? can they have been combining? |
Simple form | V-ing form |
can't I combine? can't you combine? can't he combine? can't we combine? can't you combine? can't they combine? | can't I be combining? can't you be combining? can't he be combining? can't we be combining? can't you be combining? can't they be combining? |
Perfect | V-ing perfect |
can't I have combined? can't you have combined? can't he have combined? can't we have combined? can't you have combined? can't they have combined? | can't I have been combining? can't you have been combining? can't he have been combining? can't we have been combining? can't you have been combining? can't they have been combining? |