could craze
Regular verb: craze - crazed- crazed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could craze
you could craze
he could craze
we could craze
you could craze
they could craze 	I could be crazing
you could be crazing
he could be crazing
we could be crazing
you could be crazing
they could be crazing	I could have crazed
you could have crazed
he could have crazed
we could have crazed
you could have crazed
they could have crazed	I could have been crazing
you could have been crazing
he could have been crazing
we could have been crazing
you could have been crazing
they could have been crazing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't craze
you couldn't craze
he couldn't craze
we couldn't craze
you couldn't craze
they couldn't craze 	I couldn't be crazing
you couldn't be crazing
he couldn't be crazing
we couldn't be crazing
you couldn't be crazing
they couldn't be crazing	I couldn't have crazed
you couldn't have crazed
he couldn't have crazed
we couldn't have crazed
you couldn't have crazed
they couldn't have crazed	I couldn't have been crazing
you couldn't have been crazing
he couldn't have been crazing
we couldn't have been crazing
you couldn't have been crazing
they couldn't have been crazing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I craze?
could you craze?
could he craze?
could we craze?
could you craze?
could they craze? 	could I be crazing?
could you be crazing?
could he be crazing?
could we be crazing?
could you be crazing?
could they be crazing? 	could I have crazed?
could you have crazed?
could he have crazed?
could we have crazed?
could you have crazed?
could they have crazed? 	could I have been crazing?
could you have been crazing?
could he have been crazing?
could we have been crazing?
could you have been crazing?
could they have been crazing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I craze?
couldn't you craze?
couldn't he craze?
couldn't we craze?
couldn't you craze?
couldn't they craze? 	couldn't I be crazing?
couldn't you be crazing?
couldn't he be crazing?
couldn't we be crazing?
couldn't you be crazing?
couldn't they be crazing? 	couldn't I have crazed?
couldn't you have crazed?
couldn't he have crazed?
couldn't we have crazed?
couldn't you have crazed?
couldn't they have crazed? 	couldn't I have been crazing?
couldn't you have been crazing?
couldn't he have been crazing?
couldn't we have been crazing?
couldn't you have been crazing?
couldn't they have been crazing?