could wave
Verbo regular: wave - waved- waved

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could wave
you could wave
she could wave
we could wave
you could wave
they could wave 	I could be waving
you could be waving
she could be waving
we could be waving
you could be waving
they could be waving	I could have waved
you could have waved
she could have waved
we could have waved
you could have waved
they could have waved	I could have been waving
you could have been waving
she could have been waving
we could have been waving
you could have been waving
they could have been waving	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't wave
you couldn't wave
she couldn't wave
we couldn't wave
you couldn't wave
they couldn't wave 	I couldn't be waving
you couldn't be waving
she couldn't be waving
we couldn't be waving
you couldn't be waving
they couldn't be waving	I couldn't have waved
you couldn't have waved
she couldn't have waved
we couldn't have waved
you couldn't have waved
they couldn't have waved	I couldn't have been waving
you couldn't have been waving
she couldn't have been waving
we couldn't have been waving
you couldn't have been waving
they couldn't have been waving	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I wave?
could you wave?
could she wave?
could we wave?
could you wave?
could they wave? 	could I be waving?
could you be waving?
could she be waving?
could we be waving?
could you be waving?
could they be waving? 	could I have waved?
could you have waved?
could she have waved?
could we have waved?
could you have waved?
could they have waved? 	could I have been waving?
could you have been waving?
could she have been waving?
could we have been waving?
could you have been waving?
could they have been waving? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I wave?
couldn't you wave?
couldn't she wave?
couldn't we wave?
couldn't you wave?
couldn't they wave? 	couldn't I be waving?
couldn't you be waving?
couldn't she be waving?
couldn't we be waving?
couldn't you be waving?
couldn't they be waving? 	couldn't I have waved?
couldn't you have waved?
couldn't she have waved?
couldn't we have waved?
couldn't you have waved?
couldn't they have waved? 	couldn't I have been waving?
couldn't you have been waving?
couldn't she have been waving?
couldn't we have been waving?
couldn't you have been waving?
couldn't they have been waving?