could sidestroke
Verbo regular: sidestroke - sidestroked- sidestroked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could sidestroke
you could sidestroke
he could sidestroke
we could sidestroke
you could sidestroke
they could sidestroke 	I could be sidestroking
you could be sidestroking
he could be sidestroking
we could be sidestroking
you could be sidestroking
they could be sidestroking	I could have sidestroked
you could have sidestroked
he could have sidestroked
we could have sidestroked
you could have sidestroked
they could have sidestroked	I could have been sidestroking
you could have been sidestroking
he could have been sidestroking
we could have been sidestroking
you could have been sidestroking
they could have been sidestroking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not sidestroke
you could not sidestroke
he could not sidestroke
we could not sidestroke
you could not sidestroke
they could not sidestroke 	I could not be sidestroking
you could not be sidestroking
he could not be sidestroking
we could not be sidestroking
you could not be sidestroking
they could not be sidestroking	I could not have sidestroked
you could not have sidestroked
he could not have sidestroked
we could not have sidestroked
you could not have sidestroked
they could not have sidestroked	I could not have been sidestroking
you could not have been sidestroking
he could not have been sidestroking
we could not have been sidestroking
you could not have been sidestroking
they could not have been sidestroking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I sidestroke?
could you sidestroke?
could he sidestroke?
could we sidestroke?
could you sidestroke?
could they sidestroke? 	could I be sidestroking?
could you be sidestroking?
could he be sidestroking?
could we be sidestroking?
could you be sidestroking?
could they be sidestroking? 	could I have sidestroked?
could you have sidestroked?
could he have sidestroked?
could we have sidestroked?
could you have sidestroked?
could they have sidestroked? 	could I have been sidestroking?
could you have been sidestroking?
could he have been sidestroking?
could we have been sidestroking?
could you have been sidestroking?
could they have been sidestroking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not sidestroke?
could you not sidestroke?
could he not sidestroke?
could we not sidestroke?
could you not sidestroke?
could they not sidestroke? 	could I not be sidestroking?
could you not be sidestroking?
could he not be sidestroking?
could we not be sidestroking?
could you not be sidestroking?
could they not be sidestroking? 	could I not have sidestroked?
could you not have sidestroked?
could he not have sidestroked?
could we not have sidestroked?
could you not have sidestroked?
could they not have sidestroked? 	could I not have been sidestroking?
could you not have been sidestroking?
could he not have been sidestroking?
could we not have been sidestroking?
could you not have been sidestroking?
could they not have been sidestroking?