could wreak
Regular verb: wreak - wreaked- wreaked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could wreak
you could wreak
she could wreak
we could wreak
you could wreak
they could wreak 	I could be wreaking
you could be wreaking
she could be wreaking
we could be wreaking
you could be wreaking
they could be wreaking	I could have wreaked
you could have wreaked
she could have wreaked
we could have wreaked
you could have wreaked
they could have wreaked	I could have been wreaking
you could have been wreaking
she could have been wreaking
we could have been wreaking
you could have been wreaking
they could have been wreaking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't wreak
you couldn't wreak
she couldn't wreak
we couldn't wreak
you couldn't wreak
they couldn't wreak 	I couldn't be wreaking
you couldn't be wreaking
she couldn't be wreaking
we couldn't be wreaking
you couldn't be wreaking
they couldn't be wreaking	I couldn't have wreaked
you couldn't have wreaked
she couldn't have wreaked
we couldn't have wreaked
you couldn't have wreaked
they couldn't have wreaked	I couldn't have been wreaking
you couldn't have been wreaking
she couldn't have been wreaking
we couldn't have been wreaking
you couldn't have been wreaking
they couldn't have been wreaking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I wreak?
could you wreak?
could she wreak?
could we wreak?
could you wreak?
could they wreak? 	could I be wreaking?
could you be wreaking?
could she be wreaking?
could we be wreaking?
could you be wreaking?
could they be wreaking? 	could I have wreaked?
could you have wreaked?
could she have wreaked?
could we have wreaked?
could you have wreaked?
could they have wreaked? 	could I have been wreaking?
could you have been wreaking?
could she have been wreaking?
could we have been wreaking?
could you have been wreaking?
could they have been wreaking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I wreak?
couldn't you wreak?
couldn't she wreak?
couldn't we wreak?
couldn't you wreak?
couldn't they wreak? 	couldn't I be wreaking?
couldn't you be wreaking?
couldn't she be wreaking?
couldn't we be wreaking?
couldn't you be wreaking?
couldn't they be wreaking? 	couldn't I have wreaked?
couldn't you have wreaked?
couldn't she have wreaked?
couldn't we have wreaked?
couldn't you have wreaked?
couldn't they have wreaked? 	couldn't I have been wreaking?
couldn't you have been wreaking?
couldn't she have been wreaking?
couldn't we have been wreaking?
couldn't you have been wreaking?
couldn't they have been wreaking?