could quash
Regular verb: quash - quashed- quashed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could quash
you could quash
she could quash
we could quash
you could quash
they could quash 	I could be quashing
you could be quashing
she could be quashing
we could be quashing
you could be quashing
they could be quashing	I could have quashed
you could have quashed
she could have quashed
we could have quashed
you could have quashed
they could have quashed	I could have been quashing
you could have been quashing
she could have been quashing
we could have been quashing
you could have been quashing
they could have been quashing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't quash
you couldn't quash
she couldn't quash
we couldn't quash
you couldn't quash
they couldn't quash 	I couldn't be quashing
you couldn't be quashing
she couldn't be quashing
we couldn't be quashing
you couldn't be quashing
they couldn't be quashing	I couldn't have quashed
you couldn't have quashed
she couldn't have quashed
we couldn't have quashed
you couldn't have quashed
they couldn't have quashed	I couldn't have been quashing
you couldn't have been quashing
she couldn't have been quashing
we couldn't have been quashing
you couldn't have been quashing
they couldn't have been quashing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I quash?
could you quash?
could she quash?
could we quash?
could you quash?
could they quash? 	could I be quashing?
could you be quashing?
could she be quashing?
could we be quashing?
could you be quashing?
could they be quashing? 	could I have quashed?
could you have quashed?
could she have quashed?
could we have quashed?
could you have quashed?
could they have quashed? 	could I have been quashing?
could you have been quashing?
could she have been quashing?
could we have been quashing?
could you have been quashing?
could they have been quashing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I quash?
couldn't you quash?
couldn't she quash?
couldn't we quash?
couldn't you quash?
couldn't they quash? 	couldn't I be quashing?
couldn't you be quashing?
couldn't she be quashing?
couldn't we be quashing?
couldn't you be quashing?
couldn't they be quashing? 	couldn't I have quashed?
couldn't you have quashed?
couldn't she have quashed?
couldn't we have quashed?
couldn't you have quashed?
couldn't they have quashed? 	couldn't I have been quashing?
couldn't you have been quashing?
couldn't she have been quashing?
couldn't we have been quashing?
couldn't you have been quashing?
couldn't they have been quashing?