could vandalise
Regular verb: vandalise - vandalised- vandalised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could vandalise
you could vandalise
he could vandalise
we could vandalise
you could vandalise
they could vandalise 	I could be vandalising
you could be vandalising
he could be vandalising
we could be vandalising
you could be vandalising
they could be vandalising	I could have vandalised
you could have vandalised
he could have vandalised
we could have vandalised
you could have vandalised
they could have vandalised	I could have been vandalising
you could have been vandalising
he could have been vandalising
we could have been vandalising
you could have been vandalising
they could have been vandalising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not vandalise
you could not vandalise
he could not vandalise
we could not vandalise
you could not vandalise
they could not vandalise 	I could not be vandalising
you could not be vandalising
he could not be vandalising
we could not be vandalising
you could not be vandalising
they could not be vandalising	I could not have vandalised
you could not have vandalised
he could not have vandalised
we could not have vandalised
you could not have vandalised
they could not have vandalised	I could not have been vandalising
you could not have been vandalising
he could not have been vandalising
we could not have been vandalising
you could not have been vandalising
they could not have been vandalising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I vandalise?
could you vandalise?
could he vandalise?
could we vandalise?
could you vandalise?
could they vandalise? 	could I be vandalising?
could you be vandalising?
could he be vandalising?
could we be vandalising?
could you be vandalising?
could they be vandalising? 	could I have vandalised?
could you have vandalised?
could he have vandalised?
could we have vandalised?
could you have vandalised?
could they have vandalised? 	could I have been vandalising?
could you have been vandalising?
could he have been vandalising?
could we have been vandalising?
could you have been vandalising?
could they have been vandalising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not vandalise?
could you not vandalise?
could he not vandalise?
could we not vandalise?
could you not vandalise?
could they not vandalise? 	could I not be vandalising?
could you not be vandalising?
could he not be vandalising?
could we not be vandalising?
could you not be vandalising?
could they not be vandalising? 	could I not have vandalised?
could you not have vandalised?
could he not have vandalised?
could we not have vandalised?
could you not have vandalised?
could they not have vandalised? 	could I not have been vandalising?
could you not have been vandalising?
could he not have been vandalising?
could we not have been vandalising?
could you not have been vandalising?
could they not have been vandalising?