could avalanche
Verbo regular: avalanche - avalanched- avalanched

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could avalanche
you could avalanche
he could avalanche
we could avalanche
you could avalanche
they could avalanche 	I could be avalanching
you could be avalanching
he could be avalanching
we could be avalanching
you could be avalanching
they could be avalanching	I could have avalanched
you could have avalanched
he could have avalanched
we could have avalanched
you could have avalanched
they could have avalanched	I could have been avalanching
you could have been avalanching
he could have been avalanching
we could have been avalanching
you could have been avalanching
they could have been avalanching	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not avalanche
you could not avalanche
he could not avalanche
we could not avalanche
you could not avalanche
they could not avalanche 	I could not be avalanching
you could not be avalanching
he could not be avalanching
we could not be avalanching
you could not be avalanching
they could not be avalanching	I could not have avalanched
you could not have avalanched
he could not have avalanched
we could not have avalanched
you could not have avalanched
they could not have avalanched	I could not have been avalanching
you could not have been avalanching
he could not have been avalanching
we could not have been avalanching
you could not have been avalanching
they could not have been avalanching	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I avalanche?
could you avalanche?
could he avalanche?
could we avalanche?
could you avalanche?
could they avalanche? 	could I be avalanching?
could you be avalanching?
could he be avalanching?
could we be avalanching?
could you be avalanching?
could they be avalanching? 	could I have avalanched?
could you have avalanched?
could he have avalanched?
could we have avalanched?
could you have avalanched?
could they have avalanched? 	could I have been avalanching?
could you have been avalanching?
could he have been avalanching?
could we have been avalanching?
could you have been avalanching?
could they have been avalanching? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not avalanche?
could you not avalanche?
could he not avalanche?
could we not avalanche?
could you not avalanche?
could they not avalanche? 	could I not be avalanching?
could you not be avalanching?
could he not be avalanching?
could we not be avalanching?
could you not be avalanching?
could they not be avalanching? 	could I not have avalanched?
could you not have avalanched?
could he not have avalanched?
could we not have avalanched?
could you not have avalanched?
could they not have avalanched? 	could I not have been avalanching?
could you not have been avalanching?
could he not have been avalanching?
could we not have been avalanching?
could you not have been avalanching?
could they not have been avalanching?