Regular verb: sign - signed - signed
Simple form | V-ing form |
I can sign you can sign he can sign we can sign you can sign they can sign | I can be signing you can be signing he can be signing we can be signing you can be signing they can be signing |
Perfect | V-ing perfect |
I can have signed you can have signed he can have signed we can have signed you can have signed they can have signed | I can have been signing you can have been signing he can have been signing we can have been signing you can have been signing they can have been signing |
Simple form | V-ing form |
I can't sign you can't sign he can't sign we can't sign you can't sign they can't sign | I can't be signing you can't be signing he can't be signing we can't be signing you can't be signing they can't be signing |
Perfect | V-ing perfect |
I can't have signed you can't have signed he can't have signed we can't have signed you can't have signed they can't have signed | I can't have been signing you can't have been signing he can't have been signing we can't have been signing you can't have been signing they can't have been signing |
Simple form | V-ing form |
can I sign? can you sign? can he sign? can we sign? can you sign? can they sign? | can I be signing? can you be signing? can he be signing? can we be signing? can you be signing? can they be signing? |
Perfect | V-ing perfect |
can I have signed? can you have signed? can he have signed? can we have signed? can you have signed? can they have signed? | can I have been signing? can you have been signing? can he have been signing? can we have been signing? can you have been signing? can they have been signing? |
Simple form | V-ing form |
can't I sign? can't you sign? can't he sign? can't we sign? can't you sign? can't they sign? | can't I be signing? can't you be signing? can't he be signing? can't we be signing? can't you be signing? can't they be signing? |
Perfect | V-ing perfect |
can't I have signed? can't you have signed? can't he have signed? can't we have signed? can't you have signed? can't they have signed? | can't I have been signing? can't you have been signing? can't he have been signing? can't we have been signing? can't you have been signing? can't they have been signing? |