could decalcify
Verbo regular: decalcify - decalcified- decalcified

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could decalcify
you could decalcify
she could decalcify
we could decalcify
you could decalcify
they could decalcify 	I could be decalcifying
you could be decalcifying
she could be decalcifying
we could be decalcifying
you could be decalcifying
they could be decalcifying	I could have decalcified
you could have decalcified
she could have decalcified
we could have decalcified
you could have decalcified
they could have decalcified	I could have been decalcifying
you could have been decalcifying
she could have been decalcifying
we could have been decalcifying
you could have been decalcifying
they could have been decalcifying	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not decalcify
you could not decalcify
she could not decalcify
we could not decalcify
you could not decalcify
they could not decalcify 	I could not be decalcifying
you could not be decalcifying
she could not be decalcifying
we could not be decalcifying
you could not be decalcifying
they could not be decalcifying	I could not have decalcified
you could not have decalcified
she could not have decalcified
we could not have decalcified
you could not have decalcified
they could not have decalcified	I could not have been decalcifying
you could not have been decalcifying
she could not have been decalcifying
we could not have been decalcifying
you could not have been decalcifying
they could not have been decalcifying	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I decalcify?
could you decalcify?
could she decalcify?
could we decalcify?
could you decalcify?
could they decalcify? 	could I be decalcifying?
could you be decalcifying?
could she be decalcifying?
could we be decalcifying?
could you be decalcifying?
could they be decalcifying? 	could I have decalcified?
could you have decalcified?
could she have decalcified?
could we have decalcified?
could you have decalcified?
could they have decalcified? 	could I have been decalcifying?
could you have been decalcifying?
could she have been decalcifying?
could we have been decalcifying?
could you have been decalcifying?
could they have been decalcifying? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not decalcify?
could you not decalcify?
could she not decalcify?
could we not decalcify?
could you not decalcify?
could they not decalcify? 	could I not be decalcifying?
could you not be decalcifying?
could she not be decalcifying?
could we not be decalcifying?
could you not be decalcifying?
could they not be decalcifying? 	could I not have decalcified?
could you not have decalcified?
could she not have decalcified?
could we not have decalcified?
could you not have decalcified?
could they not have decalcified? 	could I not have been decalcifying?
could you not have been decalcifying?
could she not have been decalcifying?
could we not have been decalcifying?
could you not have been decalcifying?
could they not have been decalcifying?