will stiff
Verbo regular: stiff - stiffed- stiffed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I will stiff
you will stiff
he will stiff
we will stiff
you will stiff
they will stiff 	I will be stiffing
you will be stiffing
he will be stiffing
we will be stiffing
you will be stiffing
they will be stiffing	I will have stiffed
you will have stiffed
he will have stiffed
we will have stiffed
you will have stiffed
they will have stiffed	I will have been stiffing
you will have been stiffing
he will have been stiffing
we will have been stiffing
you will have been stiffing
they will have been stiffing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I will not stiff
you will not stiff
he will not stiff
we will not stiff
you will not stiff
they will not stiff 	I will not be stiffing
you will not be stiffing
he will not be stiffing
we will not be stiffing
you will not be stiffing
they will not be stiffing	I will not have stiffed
you will not have stiffed
he will not have stiffed
we will not have stiffed
you will not have stiffed
they will not have stiffed	I will not have been stiffing
you will not have been stiffing
he will not have been stiffing
we will not have been stiffing
you will not have been stiffing
they will not have been stiffing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
will I stiff?
will you stiff?
will he stiff?
will we stiff?
will you stiff?
will they stiff? 	will I be stiffing?
will you be stiffing?
will he be stiffing?
will we be stiffing?
will you be stiffing?
will they be stiffing? 	will I have stiffed?
will you have stiffed?
will he have stiffed?
will we have stiffed?
will you have stiffed?
will they have stiffed? 	will I have been stiffing?
will you have been stiffing?
will he have been stiffing?
will we have been stiffing?
will you have been stiffing?
will they have been stiffing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
will I not stiff?
will you not stiff?
will he not stiff?
will we not stiff?
will you not stiff?
will they not stiff? 	will I not be stiffing?
will you not be stiffing?
will he not be stiffing?
will we not be stiffing?
will you not be stiffing?
will they not be stiffing? 	will I not have stiffed?
will you not have stiffed?
will he not have stiffed?
will we not have stiffed?
will you not have stiffed?
will they not have stiffed? 	will I not have been stiffing?
will you not have been stiffing?
will he not have been stiffing?
will we not have been stiffing?
will you not have been stiffing?
will they not have been stiffing?