can backstroke
Verbo regular: backstroke - backstroked- backstroked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can backstroke
you can backstroke
she can backstroke
we can backstroke
you can backstroke
they can backstroke 	I can be backstroking
you can be backstroking
she can be backstroking
we can be backstroking
you can be backstroking
they can be backstroking	I can have backstroked
you can have backstroked
she can have backstroked
we can have backstroked
you can have backstroked
they can have backstroked	I can have been backstroking
you can have been backstroking
she can have been backstroking
we can have been backstroking
you can have been backstroking
they can have been backstroking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot backstroke
you cannot backstroke
she cannot backstroke
we cannot backstroke
you cannot backstroke
they cannot backstroke 	I cannot be backstroking
you cannot be backstroking
she cannot be backstroking
we cannot be backstroking
you cannot be backstroking
they cannot be backstroking	I cannot have backstroked
you cannot have backstroked
she cannot have backstroked
we cannot have backstroked
you cannot have backstroked
they cannot have backstroked	I cannot have been backstroking
you cannot have been backstroking
she cannot have been backstroking
we cannot have been backstroking
you cannot have been backstroking
they cannot have been backstroking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I backstroke?
can you backstroke?
can she backstroke?
can we backstroke?
can you backstroke?
can they backstroke? 	can I be backstroking?
can you be backstroking?
can she be backstroking?
can we be backstroking?
can you be backstroking?
can they be backstroking? 	can I have backstroked?
can you have backstroked?
can she have backstroked?
can we have backstroked?
can you have backstroked?
can they have backstroked? 	can I have been backstroking?
can you have been backstroking?
can she have been backstroking?
can we have been backstroking?
can you have been backstroking?
can they have been backstroking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not backstroke?
can you not backstroke?
can she not backstroke?
can we not backstroke?
can you not backstroke?
can they not backstroke? 	can I not be backstroking?
can you not be backstroking?
can she not be backstroking?
can we not be backstroking?
can you not be backstroking?
can they not be backstroking? 	can I not have backstroked?
can you not have backstroked?
can she not have backstroked?
can we not have backstroked?
can you not have backstroked?
can they not have backstroked? 	can I not have been backstroking?
can you not have been backstroking?
can she not have been backstroking?
can we not have been backstroking?
can you not have been backstroking?
can they not have been backstroking?