could jar
Verbo regular: jar - jarred- jarred

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could jar
you could jar
he could jar
we could jar
you could jar
they could jar 	I could be jarring
you could be jarring
he could be jarring
we could be jarring
you could be jarring
they could be jarring	I could have jarred
you could have jarred
he could have jarred
we could have jarred
you could have jarred
they could have jarred	I could have been jarring
you could have been jarring
he could have been jarring
we could have been jarring
you could have been jarring
they could have been jarring	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't jar
you couldn't jar
he couldn't jar
we couldn't jar
you couldn't jar
they couldn't jar 	I couldn't be jarring
you couldn't be jarring
he couldn't be jarring
we couldn't be jarring
you couldn't be jarring
they couldn't be jarring	I couldn't have jarred
you couldn't have jarred
he couldn't have jarred
we couldn't have jarred
you couldn't have jarred
they couldn't have jarred	I couldn't have been jarring
you couldn't have been jarring
he couldn't have been jarring
we couldn't have been jarring
you couldn't have been jarring
they couldn't have been jarring	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I jar?
could you jar?
could he jar?
could we jar?
could you jar?
could they jar? 	could I be jarring?
could you be jarring?
could he be jarring?
could we be jarring?
could you be jarring?
could they be jarring? 	could I have jarred?
could you have jarred?
could he have jarred?
could we have jarred?
could you have jarred?
could they have jarred? 	could I have been jarring?
could you have been jarring?
could he have been jarring?
could we have been jarring?
could you have been jarring?
could they have been jarring? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I jar?
couldn't you jar?
couldn't he jar?
couldn't we jar?
couldn't you jar?
couldn't they jar? 	couldn't I be jarring?
couldn't you be jarring?
couldn't he be jarring?
couldn't we be jarring?
couldn't you be jarring?
couldn't they be jarring? 	couldn't I have jarred?
couldn't you have jarred?
couldn't he have jarred?
couldn't we have jarred?
couldn't you have jarred?
couldn't they have jarred? 	couldn't I have been jarring?
couldn't you have been jarring?
couldn't he have been jarring?
couldn't we have been jarring?
couldn't you have been jarring?
couldn't they have been jarring?