Regular verb: skim - skimmed - skimmed
Simple form | V-ing form |
I could skim you could skim he could skim we could skim you could skim they could skim | I could be skimming you could be skimming he could be skimming we could be skimming you could be skimming they could be skimming |
Perfect | V-ing perfect |
I could have skimmed you could have skimmed he could have skimmed we could have skimmed you could have skimmed they could have skimmed | I could have been skimming you could have been skimming he could have been skimming we could have been skimming you could have been skimming they could have been skimming |
Simple form | V-ing form |
I could not skim you could not skim he could not skim we could not skim you could not skim they could not skim | I could not be skimming you could not be skimming he could not be skimming we could not be skimming you could not be skimming they could not be skimming |
Perfect | V-ing perfect |
I could not have skimmed you could not have skimmed he could not have skimmed we could not have skimmed you could not have skimmed they could not have skimmed | I could not have been skimming you could not have been skimming he could not have been skimming we could not have been skimming you could not have been skimming they could not have been skimming |
Simple form | V-ing form |
could I skim? could you skim? could he skim? could we skim? could you skim? could they skim? | could I be skimming? could you be skimming? could he be skimming? could we be skimming? could you be skimming? could they be skimming? |
Perfect | V-ing perfect |
could I have skimmed? could you have skimmed? could he have skimmed? could we have skimmed? could you have skimmed? could they have skimmed? | could I have been skimming? could you have been skimming? could he have been skimming? could we have been skimming? could you have been skimming? could they have been skimming? |
Simple form | V-ing form |
could I not skim? could you not skim? could he not skim? could we not skim? could you not skim? could they not skim? | could I not be skimming? could you not be skimming? could he not be skimming? could we not be skimming? could you not be skimming? could they not be skimming? |
Perfect | V-ing perfect |
could I not have skimmed? could you not have skimmed? could he not have skimmed? could we not have skimmed? could you not have skimmed? could they not have skimmed? | could I not have been skimming? could you not have been skimming? could he not have been skimming? could we not have been skimming? could you not have been skimming? could they not have been skimming? |