could chelate
Verbo regular: chelate - chelated- chelated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could chelate
you could chelate
he could chelate
we could chelate
you could chelate
they could chelate 	I could be chelating
you could be chelating
he could be chelating
we could be chelating
you could be chelating
they could be chelating	I could have chelated
you could have chelated
he could have chelated
we could have chelated
you could have chelated
they could have chelated	I could have been chelating
you could have been chelating
he could have been chelating
we could have been chelating
you could have been chelating
they could have been chelating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not chelate
you could not chelate
he could not chelate
we could not chelate
you could not chelate
they could not chelate 	I could not be chelating
you could not be chelating
he could not be chelating
we could not be chelating
you could not be chelating
they could not be chelating	I could not have chelated
you could not have chelated
he could not have chelated
we could not have chelated
you could not have chelated
they could not have chelated	I could not have been chelating
you could not have been chelating
he could not have been chelating
we could not have been chelating
you could not have been chelating
they could not have been chelating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I chelate?
could you chelate?
could he chelate?
could we chelate?
could you chelate?
could they chelate? 	could I be chelating?
could you be chelating?
could he be chelating?
could we be chelating?
could you be chelating?
could they be chelating? 	could I have chelated?
could you have chelated?
could he have chelated?
could we have chelated?
could you have chelated?
could they have chelated? 	could I have been chelating?
could you have been chelating?
could he have been chelating?
could we have been chelating?
could you have been chelating?
could they have been chelating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not chelate?
could you not chelate?
could he not chelate?
could we not chelate?
could you not chelate?
could they not chelate? 	could I not be chelating?
could you not be chelating?
could he not be chelating?
could we not be chelating?
could you not be chelating?
could they not be chelating? 	could I not have chelated?
could you not have chelated?
could he not have chelated?
could we not have chelated?
could you not have chelated?
could they not have chelated? 	could I not have been chelating?
could you not have been chelating?
could he not have been chelating?
could we not have been chelating?
could you not have been chelating?
could they not have been chelating?