Regular verb: grumble - grumbled - grumbled
Simple form | V-ing form |
I could grumble you could grumble he could grumble we could grumble you could grumble they could grumble | I could be grumbling you could be grumbling he could be grumbling we could be grumbling you could be grumbling they could be grumbling |
Perfect | V-ing perfect |
I could have grumbled you could have grumbled he could have grumbled we could have grumbled you could have grumbled they could have grumbled | I could have been grumbling you could have been grumbling he could have been grumbling we could have been grumbling you could have been grumbling they could have been grumbling |
Simple form | V-ing form |
I could not grumble you could not grumble he could not grumble we could not grumble you could not grumble they could not grumble | I could not be grumbling you could not be grumbling he could not be grumbling we could not be grumbling you could not be grumbling they could not be grumbling |
Perfect | V-ing perfect |
I could not have grumbled you could not have grumbled he could not have grumbled we could not have grumbled you could not have grumbled they could not have grumbled | I could not have been grumbling you could not have been grumbling he could not have been grumbling we could not have been grumbling you could not have been grumbling they could not have been grumbling |
Simple form | V-ing form |
could I grumble? could you grumble? could he grumble? could we grumble? could you grumble? could they grumble? | could I be grumbling? could you be grumbling? could he be grumbling? could we be grumbling? could you be grumbling? could they be grumbling? |
Perfect | V-ing perfect |
could I have grumbled? could you have grumbled? could he have grumbled? could we have grumbled? could you have grumbled? could they have grumbled? | could I have been grumbling? could you have been grumbling? could he have been grumbling? could we have been grumbling? could you have been grumbling? could they have been grumbling? |
Simple form | V-ing form |
could I not grumble? could you not grumble? could he not grumble? could we not grumble? could you not grumble? could they not grumble? | could I not be grumbling? could you not be grumbling? could he not be grumbling? could we not be grumbling? could you not be grumbling? could they not be grumbling? |
Perfect | V-ing perfect |
could I not have grumbled? could you not have grumbled? could he not have grumbled? could we not have grumbled? could you not have grumbled? could they not have grumbled? | could I not have been grumbling? could you not have been grumbling? could he not have been grumbling? could we not have been grumbling? could you not have been grumbling? could they not have been grumbling? |