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