could double-tongue
Verbo regular: double-tongue - double-tongued- double-tongued

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could double-tongue
you could double-tongue
he could double-tongue
we could double-tongue
you could double-tongue
they could double-tongue 	I could be double-tonguing
you could be double-tonguing
he could be double-tonguing
we could be double-tonguing
you could be double-tonguing
they could be double-tonguing	I could have double-tongued
you could have double-tongued
he could have double-tongued
we could have double-tongued
you could have double-tongued
they could have double-tongued	I could have been double-tonguing
you could have been double-tonguing
he could have been double-tonguing
we could have been double-tonguing
you could have been double-tonguing
they could have been double-tonguing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not double-tongue
you could not double-tongue
he could not double-tongue
we could not double-tongue
you could not double-tongue
they could not double-tongue 	I could not be double-tonguing
you could not be double-tonguing
he could not be double-tonguing
we could not be double-tonguing
you could not be double-tonguing
they could not be double-tonguing	I could not have double-tongued
you could not have double-tongued
he could not have double-tongued
we could not have double-tongued
you could not have double-tongued
they could not have double-tongued	I could not have been double-tonguing
you could not have been double-tonguing
he could not have been double-tonguing
we could not have been double-tonguing
you could not have been double-tonguing
they could not have been double-tonguing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I double-tongue?
could you double-tongue?
could he double-tongue?
could we double-tongue?
could you double-tongue?
could they double-tongue? 	could I be double-tonguing?
could you be double-tonguing?
could he be double-tonguing?
could we be double-tonguing?
could you be double-tonguing?
could they be double-tonguing? 	could I have double-tongued?
could you have double-tongued?
could he have double-tongued?
could we have double-tongued?
could you have double-tongued?
could they have double-tongued? 	could I have been double-tonguing?
could you have been double-tonguing?
could he have been double-tonguing?
could we have been double-tonguing?
could you have been double-tonguing?
could they have been double-tonguing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not double-tongue?
could you not double-tongue?
could he not double-tongue?
could we not double-tongue?
could you not double-tongue?
could they not double-tongue? 	could I not be double-tonguing?
could you not be double-tonguing?
could he not be double-tonguing?
could we not be double-tonguing?
could you not be double-tonguing?
could they not be double-tonguing? 	could I not have double-tongued?
could you not have double-tongued?
could he not have double-tongued?
could we not have double-tongued?
could you not have double-tongued?
could they not have double-tongued? 	could I not have been double-tonguing?
could you not have been double-tonguing?
could he not have been double-tonguing?
could we not have been double-tonguing?
could you not have been double-tonguing?
could they not have been double-tonguing?