could whittle
Verbo regular: whittle - whittled- whittled

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could whittle
you could whittle
he could whittle
we could whittle
you could whittle
they could whittle 	I could be whittling
you could be whittling
he could be whittling
we could be whittling
you could be whittling
they could be whittling	I could have whittled
you could have whittled
he could have whittled
we could have whittled
you could have whittled
they could have whittled	I could have been whittling
you could have been whittling
he could have been whittling
we could have been whittling
you could have been whittling
they could have been whittling	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't whittle
you couldn't whittle
he couldn't whittle
we couldn't whittle
you couldn't whittle
they couldn't whittle 	I couldn't be whittling
you couldn't be whittling
he couldn't be whittling
we couldn't be whittling
you couldn't be whittling
they couldn't be whittling	I couldn't have whittled
you couldn't have whittled
he couldn't have whittled
we couldn't have whittled
you couldn't have whittled
they couldn't have whittled	I couldn't have been whittling
you couldn't have been whittling
he couldn't have been whittling
we couldn't have been whittling
you couldn't have been whittling
they couldn't have been whittling	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I whittle?
could you whittle?
could he whittle?
could we whittle?
could you whittle?
could they whittle? 	could I be whittling?
could you be whittling?
could he be whittling?
could we be whittling?
could you be whittling?
could they be whittling? 	could I have whittled?
could you have whittled?
could he have whittled?
could we have whittled?
could you have whittled?
could they have whittled? 	could I have been whittling?
could you have been whittling?
could he have been whittling?
could we have been whittling?
could you have been whittling?
could they have been whittling? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I whittle?
couldn't you whittle?
couldn't he whittle?
couldn't we whittle?
couldn't you whittle?
couldn't they whittle? 	couldn't I be whittling?
couldn't you be whittling?
couldn't he be whittling?
couldn't we be whittling?
couldn't you be whittling?
couldn't they be whittling? 	couldn't I have whittled?
couldn't you have whittled?
couldn't he have whittled?
couldn't we have whittled?
couldn't you have whittled?
couldn't they have whittled? 	couldn't I have been whittling?
couldn't you have been whittling?
couldn't he have been whittling?
couldn't we have been whittling?
couldn't you have been whittling?
couldn't they have been whittling?