could vaporise
Regular verb: vaporise - vaporised- vaporised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could vaporise
you could vaporise
he could vaporise
we could vaporise
you could vaporise
they could vaporise 	I could be vaporising
you could be vaporising
he could be vaporising
we could be vaporising
you could be vaporising
they could be vaporising	I could have vaporised
you could have vaporised
he could have vaporised
we could have vaporised
you could have vaporised
they could have vaporised	I could have been vaporising
you could have been vaporising
he could have been vaporising
we could have been vaporising
you could have been vaporising
they could have been vaporising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not vaporise
you could not vaporise
he could not vaporise
we could not vaporise
you could not vaporise
they could not vaporise 	I could not be vaporising
you could not be vaporising
he could not be vaporising
we could not be vaporising
you could not be vaporising
they could not be vaporising	I could not have vaporised
you could not have vaporised
he could not have vaporised
we could not have vaporised
you could not have vaporised
they could not have vaporised	I could not have been vaporising
you could not have been vaporising
he could not have been vaporising
we could not have been vaporising
you could not have been vaporising
they could not have been vaporising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I vaporise?
could you vaporise?
could he vaporise?
could we vaporise?
could you vaporise?
could they vaporise? 	could I be vaporising?
could you be vaporising?
could he be vaporising?
could we be vaporising?
could you be vaporising?
could they be vaporising? 	could I have vaporised?
could you have vaporised?
could he have vaporised?
could we have vaporised?
could you have vaporised?
could they have vaporised? 	could I have been vaporising?
could you have been vaporising?
could he have been vaporising?
could we have been vaporising?
could you have been vaporising?
could they have been vaporising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not vaporise?
could you not vaporise?
could he not vaporise?
could we not vaporise?
could you not vaporise?
could they not vaporise? 	could I not be vaporising?
could you not be vaporising?
could he not be vaporising?
could we not be vaporising?
could you not be vaporising?
could they not be vaporising? 	could I not have vaporised?
could you not have vaporised?
could he not have vaporised?
could we not have vaporised?
could you not have vaporised?
could they not have vaporised? 	could I not have been vaporising?
could you not have been vaporising?
could he not have been vaporising?
could we not have been vaporising?
could you not have been vaporising?
could they not have been vaporising?