could leapfrog
Verbo regular: leapfrog - leapfroged- leapfroged

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could leapfrog
you could leapfrog
he could leapfrog
we could leapfrog
you could leapfrog
they could leapfrog 	I could be leapfroging
you could be leapfroging
he could be leapfroging
we could be leapfroging
you could be leapfroging
they could be leapfroging	I could have leapfroged
you could have leapfroged
he could have leapfroged
we could have leapfroged
you could have leapfroged
they could have leapfroged	I could have been leapfroging
you could have been leapfroging
he could have been leapfroging
we could have been leapfroging
you could have been leapfroging
they could have been leapfroging	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not leapfrog
you could not leapfrog
he could not leapfrog
we could not leapfrog
you could not leapfrog
they could not leapfrog 	I could not be leapfroging
you could not be leapfroging
he could not be leapfroging
we could not be leapfroging
you could not be leapfroging
they could not be leapfroging	I could not have leapfroged
you could not have leapfroged
he could not have leapfroged
we could not have leapfroged
you could not have leapfroged
they could not have leapfroged	I could not have been leapfroging
you could not have been leapfroging
he could not have been leapfroging
we could not have been leapfroging
you could not have been leapfroging
they could not have been leapfroging	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I leapfrog?
could you leapfrog?
could he leapfrog?
could we leapfrog?
could you leapfrog?
could they leapfrog? 	could I be leapfroging?
could you be leapfroging?
could he be leapfroging?
could we be leapfroging?
could you be leapfroging?
could they be leapfroging? 	could I have leapfroged?
could you have leapfroged?
could he have leapfroged?
could we have leapfroged?
could you have leapfroged?
could they have leapfroged? 	could I have been leapfroging?
could you have been leapfroging?
could he have been leapfroging?
could we have been leapfroging?
could you have been leapfroging?
could they have been leapfroging? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not leapfrog?
could you not leapfrog?
could he not leapfrog?
could we not leapfrog?
could you not leapfrog?
could they not leapfrog? 	could I not be leapfroging?
could you not be leapfroging?
could he not be leapfroging?
could we not be leapfroging?
could you not be leapfroging?
could they not be leapfroging? 	could I not have leapfroged?
could you not have leapfroged?
could he not have leapfroged?
could we not have leapfroged?
could you not have leapfroged?
could they not have leapfroged? 	could I not have been leapfroging?
could you not have been leapfroging?
could he not have been leapfroging?
could we not have been leapfroging?
could you not have been leapfroging?
could they not have been leapfroging?