could yawp
Verbo regular: yawp - yawped- yawped

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could yawp
you could yawp
he could yawp
we could yawp
you could yawp
they could yawp 	I could be yawping
you could be yawping
he could be yawping
we could be yawping
you could be yawping
they could be yawping	I could have yawped
you could have yawped
he could have yawped
we could have yawped
you could have yawped
they could have yawped	I could have been yawping
you could have been yawping
he could have been yawping
we could have been yawping
you could have been yawping
they could have been yawping	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not yawp
you could not yawp
he could not yawp
we could not yawp
you could not yawp
they could not yawp 	I could not be yawping
you could not be yawping
he could not be yawping
we could not be yawping
you could not be yawping
they could not be yawping	I could not have yawped
you could not have yawped
he could not have yawped
we could not have yawped
you could not have yawped
they could not have yawped	I could not have been yawping
you could not have been yawping
he could not have been yawping
we could not have been yawping
you could not have been yawping
they could not have been yawping	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I yawp?
could you yawp?
could he yawp?
could we yawp?
could you yawp?
could they yawp? 	could I be yawping?
could you be yawping?
could he be yawping?
could we be yawping?
could you be yawping?
could they be yawping? 	could I have yawped?
could you have yawped?
could he have yawped?
could we have yawped?
could you have yawped?
could they have yawped? 	could I have been yawping?
could you have been yawping?
could he have been yawping?
could we have been yawping?
could you have been yawping?
could they have been yawping? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not yawp?
could you not yawp?
could he not yawp?
could we not yawp?
could you not yawp?
could they not yawp? 	could I not be yawping?
could you not be yawping?
could he not be yawping?
could we not be yawping?
could you not be yawping?
could they not be yawping? 	could I not have yawped?
could you not have yawped?
could he not have yawped?
could we not have yawped?
could you not have yawped?
could they not have yawped? 	could I not have been yawping?
could you not have been yawping?
could he not have been yawping?
could we not have been yawping?
could you not have been yawping?
could they not have been yawping?