I could decimalise you could decimalise he could decimalise we could decimalise you could decimalise they could decimalise
V-ing form
I could be decimalising you could be decimalising he could be decimalising we could be decimalising you could be decimalising they could be decimalising
Perfect
I could have decimalised you could have decimalised he could have decimalised we could have decimalised you could have decimalised they could have decimalised
V-ing perfect
I could have been decimalising you could have been decimalising he could have been decimalising we could have been decimalising you could have been decimalising they could have been decimalising
Negation
Simple form
I could not decimalise you could not decimalise he could not decimalise we could not decimalise you could not decimalise they could not decimalise
V-ing form
I could not be decimalising you could not be decimalising he could not be decimalising we could not be decimalising you could not be decimalising they could not be decimalising
Perfect
I could not have decimalised you could not have decimalised he could not have decimalised we could not have decimalised you could not have decimalised they could not have decimalised
V-ing perfect
I could not have been decimalising you could not have been decimalising he could not have been decimalising we could not have been decimalising you could not have been decimalising they could not have been decimalising
Interrogative form
Simple form
could I decimalise? could you decimalise? could he decimalise? could we decimalise? could you decimalise? could they decimalise?
V-ing form
could I be decimalising? could you be decimalising? could he be decimalising? could we be decimalising? could you be decimalising? could they be decimalising?
Perfect
could I have decimalised? could you have decimalised? could he have decimalised? could we have decimalised? could you have decimalised? could they have decimalised?
V-ing perfect
could I have been decimalising? could you have been decimalising? could he have been decimalising? could we have been decimalising? could you have been decimalising? could they have been decimalising?
Interro-negative form
Simple form
could I not decimalise? could you not decimalise? could he not decimalise? could we not decimalise? could you not decimalise? could they not decimalise?
V-ing form
could I not be decimalising? could you not be decimalising? could he not be decimalising? could we not be decimalising? could you not be decimalising? could they not be decimalising?
Perfect
could I not have decimalised? could you not have decimalised? could he not have decimalised? could we not have decimalised? could you not have decimalised? could they not have decimalised?
V-ing perfect
could I not have been decimalising? could you not have been decimalising? could he not have been decimalising? could we not have been decimalising? could you not have been decimalising? could they not have been decimalising?