could vandalize
Regular verb: vandalize - vandalized- vandalized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could vandalize
you could vandalize
she could vandalize
we could vandalize
you could vandalize
they could vandalize 	I could be vandalizing
you could be vandalizing
she could be vandalizing
we could be vandalizing
you could be vandalizing
they could be vandalizing	I could have vandalized
you could have vandalized
she could have vandalized
we could have vandalized
you could have vandalized
they could have vandalized	I could have been vandalizing
you could have been vandalizing
she could have been vandalizing
we could have been vandalizing
you could have been vandalizing
they could have been vandalizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't vandalize
you couldn't vandalize
she couldn't vandalize
we couldn't vandalize
you couldn't vandalize
they couldn't vandalize 	I couldn't be vandalizing
you couldn't be vandalizing
she couldn't be vandalizing
we couldn't be vandalizing
you couldn't be vandalizing
they couldn't be vandalizing	I couldn't have vandalized
you couldn't have vandalized
she couldn't have vandalized
we couldn't have vandalized
you couldn't have vandalized
they couldn't have vandalized	I couldn't have been vandalizing
you couldn't have been vandalizing
she couldn't have been vandalizing
we couldn't have been vandalizing
you couldn't have been vandalizing
they couldn't have been vandalizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I vandalize?
could you vandalize?
could she vandalize?
could we vandalize?
could you vandalize?
could they vandalize? 	could I be vandalizing?
could you be vandalizing?
could she be vandalizing?
could we be vandalizing?
could you be vandalizing?
could they be vandalizing? 	could I have vandalized?
could you have vandalized?
could she have vandalized?
could we have vandalized?
could you have vandalized?
could they have vandalized? 	could I have been vandalizing?
could you have been vandalizing?
could she have been vandalizing?
could we have been vandalizing?
could you have been vandalizing?
could they have been vandalizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I vandalize?
couldn't you vandalize?
couldn't she vandalize?
couldn't we vandalize?
couldn't you vandalize?
couldn't they vandalize? 	couldn't I be vandalizing?
couldn't you be vandalizing?
couldn't she be vandalizing?
couldn't we be vandalizing?
couldn't you be vandalizing?
couldn't they be vandalizing? 	couldn't I have vandalized?
couldn't you have vandalized?
couldn't she have vandalized?
couldn't we have vandalized?
couldn't you have vandalized?
couldn't they have vandalized? 	couldn't I have been vandalizing?
couldn't you have been vandalizing?
couldn't she have been vandalizing?
couldn't we have been vandalizing?
couldn't you have been vandalizing?
couldn't they have been vandalizing?