could ionise
Regular verb: ionise - ionised- ionised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could ionise
you could ionise
he could ionise
we could ionise
you could ionise
they could ionise 	I could be ionising
you could be ionising
he could be ionising
we could be ionising
you could be ionising
they could be ionising	I could have ionised
you could have ionised
he could have ionised
we could have ionised
you could have ionised
they could have ionised	I could have been ionising
you could have been ionising
he could have been ionising
we could have been ionising
you could have been ionising
they could have been ionising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not ionise
you could not ionise
he could not ionise
we could not ionise
you could not ionise
they could not ionise 	I could not be ionising
you could not be ionising
he could not be ionising
we could not be ionising
you could not be ionising
they could not be ionising	I could not have ionised
you could not have ionised
he could not have ionised
we could not have ionised
you could not have ionised
they could not have ionised	I could not have been ionising
you could not have been ionising
he could not have been ionising
we could not have been ionising
you could not have been ionising
they could not have been ionising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I ionise?
could you ionise?
could he ionise?
could we ionise?
could you ionise?
could they ionise? 	could I be ionising?
could you be ionising?
could he be ionising?
could we be ionising?
could you be ionising?
could they be ionising? 	could I have ionised?
could you have ionised?
could he have ionised?
could we have ionised?
could you have ionised?
could they have ionised? 	could I have been ionising?
could you have been ionising?
could he have been ionising?
could we have been ionising?
could you have been ionising?
could they have been ionising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not ionise?
could you not ionise?
could he not ionise?
could we not ionise?
could you not ionise?
could they not ionise? 	could I not be ionising?
could you not be ionising?
could he not be ionising?
could we not be ionising?
could you not be ionising?
could they not be ionising? 	could I not have ionised?
could you not have ionised?
could he not have ionised?
could we not have ionised?
could you not have ionised?
could they not have ionised? 	could I not have been ionising?
could you not have been ionising?
could he not have been ionising?
could we not have been ionising?
could you not have been ionising?
could they not have been ionising?