could crush
Regular verb: crush - crushed- crushed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could crush
you could crush
she could crush
we could crush
you could crush
they could crush 	I could be crushing
you could be crushing
she could be crushing
we could be crushing
you could be crushing
they could be crushing	I could have crushed
you could have crushed
she could have crushed
we could have crushed
you could have crushed
they could have crushed	I could have been crushing
you could have been crushing
she could have been crushing
we could have been crushing
you could have been crushing
they could have been crushing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't crush
you couldn't crush
she couldn't crush
we couldn't crush
you couldn't crush
they couldn't crush 	I couldn't be crushing
you couldn't be crushing
she couldn't be crushing
we couldn't be crushing
you couldn't be crushing
they couldn't be crushing	I couldn't have crushed
you couldn't have crushed
she couldn't have crushed
we couldn't have crushed
you couldn't have crushed
they couldn't have crushed	I couldn't have been crushing
you couldn't have been crushing
she couldn't have been crushing
we couldn't have been crushing
you couldn't have been crushing
they couldn't have been crushing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I crush?
could you crush?
could she crush?
could we crush?
could you crush?
could they crush? 	could I be crushing?
could you be crushing?
could she be crushing?
could we be crushing?
could you be crushing?
could they be crushing? 	could I have crushed?
could you have crushed?
could she have crushed?
could we have crushed?
could you have crushed?
could they have crushed? 	could I have been crushing?
could you have been crushing?
could she have been crushing?
could we have been crushing?
could you have been crushing?
could they have been crushing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I crush?
couldn't you crush?
couldn't she crush?
couldn't we crush?
couldn't you crush?
couldn't they crush? 	couldn't I be crushing?
couldn't you be crushing?
couldn't she be crushing?
couldn't we be crushing?
couldn't you be crushing?
couldn't they be crushing? 	couldn't I have crushed?
couldn't you have crushed?
couldn't she have crushed?
couldn't we have crushed?
couldn't you have crushed?
couldn't they have crushed? 	couldn't I have been crushing?
couldn't you have been crushing?
couldn't she have been crushing?
couldn't we have been crushing?
couldn't you have been crushing?
couldn't they have been crushing?