could decimalise
Regular verb: decimalise - decimalised- decimalised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could decimalise
you could decimalise
he could decimalise
we could decimalise
you could decimalise
they could decimalise 	I could be decimalising
you could be decimalising
he could be decimalising
we could be decimalising
you could be decimalising
they could be decimalising	I could have decimalised
you could have decimalised
he could have decimalised
we could have decimalised
you could have decimalised
they could have decimalised	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 	V-ing form 	Perfect 	V-ing perfect 	
I could not decimalise
you could not decimalise
he could not decimalise
we could not decimalise
you could not decimalise
they could not decimalise 	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	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	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 	V-ing form 	Perfect 	V-ing perfect 	
could I decimalise?
could you decimalise?
could he decimalise?
could we decimalise?
could you decimalise?
could they decimalise? 	could I be decimalising?
could you be decimalising?
could he be decimalising?
could we be decimalising?
could you be decimalising?
could they be decimalising? 	could I have decimalised?
could you have decimalised?
could he have decimalised?
could we have decimalised?
could you have decimalised?
could they have decimalised? 	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 	V-ing form 	Perfect 	V-ing perfect 	
could I not decimalise?
could you not decimalise?
could he not decimalise?
could we not decimalise?
could you not decimalise?
could they not decimalise? 	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? 	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? 	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?