could snowmobile
Verbo regular: snowmobile - snowmobiled- snowmobiled

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could snowmobile
you could snowmobile
he could snowmobile
we could snowmobile
you could snowmobile
they could snowmobile 	I could be snowmobiling
you could be snowmobiling
he could be snowmobiling
we could be snowmobiling
you could be snowmobiling
they could be snowmobiling	I could have snowmobiled
you could have snowmobiled
he could have snowmobiled
we could have snowmobiled
you could have snowmobiled
they could have snowmobiled	I could have been snowmobiling
you could have been snowmobiling
he could have been snowmobiling
we could have been snowmobiling
you could have been snowmobiling
they could have been snowmobiling	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't snowmobile
you couldn't snowmobile
he couldn't snowmobile
we couldn't snowmobile
you couldn't snowmobile
they couldn't snowmobile 	I couldn't be snowmobiling
you couldn't be snowmobiling
he couldn't be snowmobiling
we couldn't be snowmobiling
you couldn't be snowmobiling
they couldn't be snowmobiling	I couldn't have snowmobiled
you couldn't have snowmobiled
he couldn't have snowmobiled
we couldn't have snowmobiled
you couldn't have snowmobiled
they couldn't have snowmobiled	I couldn't have been snowmobiling
you couldn't have been snowmobiling
he couldn't have been snowmobiling
we couldn't have been snowmobiling
you couldn't have been snowmobiling
they couldn't have been snowmobiling	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I snowmobile?
could you snowmobile?
could he snowmobile?
could we snowmobile?
could you snowmobile?
could they snowmobile? 	could I be snowmobiling?
could you be snowmobiling?
could he be snowmobiling?
could we be snowmobiling?
could you be snowmobiling?
could they be snowmobiling? 	could I have snowmobiled?
could you have snowmobiled?
could he have snowmobiled?
could we have snowmobiled?
could you have snowmobiled?
could they have snowmobiled? 	could I have been snowmobiling?
could you have been snowmobiling?
could he have been snowmobiling?
could we have been snowmobiling?
could you have been snowmobiling?
could they have been snowmobiling? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I snowmobile?
couldn't you snowmobile?
couldn't he snowmobile?
couldn't we snowmobile?
couldn't you snowmobile?
couldn't they snowmobile? 	couldn't I be snowmobiling?
couldn't you be snowmobiling?
couldn't he be snowmobiling?
couldn't we be snowmobiling?
couldn't you be snowmobiling?
couldn't they be snowmobiling? 	couldn't I have snowmobiled?
couldn't you have snowmobiled?
couldn't he have snowmobiled?
couldn't we have snowmobiled?
couldn't you have snowmobiled?
couldn't they have snowmobiled? 	couldn't I have been snowmobiling?
couldn't you have been snowmobiling?
couldn't he have been snowmobiling?
couldn't we have been snowmobiling?
couldn't you have been snowmobiling?
couldn't they have been snowmobiling?