ought to stack
Verbo regular: stack - stacked- stacked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I ought to stack
you ought to stack
she ought to stack
we ought to stack
you ought to stack
they ought to stack 	I ought to be stacking
you ought to be stacking
she ought to be stacking
we ought to be stacking
you ought to be stacking
they ought to be stacking	I ought to have stacked
you ought to have stacked
she ought to have stacked
we ought to have stacked
you ought to have stacked
they ought to have stacked	I ought to have been stacking
you ought to have been stacking
she ought to have been stacking
we ought to have been stacking
you ought to have been stacking
they ought to have been stacking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I oughtn't to stack
you oughtn't to stack
she oughtn't to stack
we oughtn't to stack
you oughtn't to stack
they oughtn't to stack 	I oughtn't to be stacking
you oughtn't to be stacking
she oughtn't to be stacking
we oughtn't to be stacking
you oughtn't to be stacking
they oughtn't to be stacking	I oughtn't to have stacked
you oughtn't to have stacked
she oughtn't to have stacked
we oughtn't to have stacked
you oughtn't to have stacked
they oughtn't to have stacked	I oughtn't to have been stacking
you oughtn't to have been stacking
she oughtn't to have been stacking
we oughtn't to have been stacking
you oughtn't to have been stacking
they oughtn't to have been stacking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
ought to I stack?
ought to you stack?
ought to she stack?
ought to we stack?
ought to you stack?
ought to they stack? 	ought to I be stacking?
ought to you be stacking?
ought to she be stacking?
ought to we be stacking?
ought to you be stacking?
ought to they be stacking? 	ought to I have stacked?
ought to you have stacked?
ought to she have stacked?
ought to we have stacked?
ought to you have stacked?
ought to they have stacked? 	ought to I have been stacking?
ought to you have been stacking?
ought to she have been stacking?
ought to we have been stacking?
ought to you have been stacking?
ought to they have been stacking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
oughtn't I to stack?
oughtn't you to stack?
oughtn't she to stack?
oughtn't we to stack?
oughtn't you to stack?
oughtn't they to stack? 	oughtn't I to be stacking?
oughtn't you to be stacking?
oughtn't she to be stacking?
oughtn't we to be stacking?
oughtn't you to be stacking?
oughtn't they to be stacking? 	oughtn't I to have stacked?
oughtn't you to have stacked?
oughtn't she to have stacked?
oughtn't we to have stacked?
oughtn't you to have stacked?
oughtn't they to have stacked? 	oughtn't I to have been stacking?
oughtn't you to have been stacking?
oughtn't she to have been stacking?
oughtn't we to have been stacking?
oughtn't you to have been stacking?
oughtn't they to have been stacking?