could tenon
Verbo regular: tenon - tenoned- tenoned

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could tenon
you could tenon
he could tenon
we could tenon
you could tenon
they could tenon 	I could be tenoning
you could be tenoning
he could be tenoning
we could be tenoning
you could be tenoning
they could be tenoning	I could have tenoned
you could have tenoned
he could have tenoned
we could have tenoned
you could have tenoned
they could have tenoned	I could have been tenoning
you could have been tenoning
he could have been tenoning
we could have been tenoning
you could have been tenoning
they could have been tenoning	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't tenon
you couldn't tenon
he couldn't tenon
we couldn't tenon
you couldn't tenon
they couldn't tenon 	I couldn't be tenoning
you couldn't be tenoning
he couldn't be tenoning
we couldn't be tenoning
you couldn't be tenoning
they couldn't be tenoning	I couldn't have tenoned
you couldn't have tenoned
he couldn't have tenoned
we couldn't have tenoned
you couldn't have tenoned
they couldn't have tenoned	I couldn't have been tenoning
you couldn't have been tenoning
he couldn't have been tenoning
we couldn't have been tenoning
you couldn't have been tenoning
they couldn't have been tenoning	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I tenon?
could you tenon?
could he tenon?
could we tenon?
could you tenon?
could they tenon? 	could I be tenoning?
could you be tenoning?
could he be tenoning?
could we be tenoning?
could you be tenoning?
could they be tenoning? 	could I have tenoned?
could you have tenoned?
could he have tenoned?
could we have tenoned?
could you have tenoned?
could they have tenoned? 	could I have been tenoning?
could you have been tenoning?
could he have been tenoning?
could we have been tenoning?
could you have been tenoning?
could they have been tenoning? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I tenon?
couldn't you tenon?
couldn't he tenon?
couldn't we tenon?
couldn't you tenon?
couldn't they tenon? 	couldn't I be tenoning?
couldn't you be tenoning?
couldn't he be tenoning?
couldn't we be tenoning?
couldn't you be tenoning?
couldn't they be tenoning? 	couldn't I have tenoned?
couldn't you have tenoned?
couldn't he have tenoned?
couldn't we have tenoned?
couldn't you have tenoned?
couldn't they have tenoned? 	couldn't I have been tenoning?
couldn't you have been tenoning?
couldn't he have been tenoning?
couldn't we have been tenoning?
couldn't you have been tenoning?
couldn't they have been tenoning?