shall thumbtack
Verbo regular: thumbtack - thumbtacked- thumbtacked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'll thumbtack
you'll thumbtack
he'll thumbtack
we'll thumbtack
you'll thumbtack
they'll thumbtack 	I'll be thumbtacking
you'll be thumbtacking
he'll be thumbtacking
we'll be thumbtacking
you'll be thumbtacking
they'll be thumbtacking	I'll have thumbtacked
you'll have thumbtacked
he'll have thumbtacked
we'll have thumbtacked
you'll have thumbtacked
they'll have thumbtacked	I'll have been thumbtacking
you'll have been thumbtacking
he'll have been thumbtacking
we'll have been thumbtacking
you'll have been thumbtacking
they'll have been thumbtacking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shan't thumbtack
you shan't thumbtack
he shan't thumbtack
we shan't thumbtack
you shan't thumbtack
they shan't thumbtack 	I shan't be thumbtacking
you shan't be thumbtacking
he shan't be thumbtacking
we shan't be thumbtacking
you shan't be thumbtacking
they shan't be thumbtacking	I shan't have thumbtacked
you shan't have thumbtacked
he shan't have thumbtacked
we shan't have thumbtacked
you shan't have thumbtacked
they shan't have thumbtacked	I shan't have been thumbtacking
you shan't have been thumbtacking
he shan't have been thumbtacking
we shan't have been thumbtacking
you shan't have been thumbtacking
they shan't have been thumbtacking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shall I thumbtack?
shall you thumbtack?
shall he thumbtack?
shall we thumbtack?
shall you thumbtack?
shall they thumbtack? 	shall I be thumbtacking?
shall you be thumbtacking?
shall he be thumbtacking?
shall we be thumbtacking?
shall you be thumbtacking?
shall they be thumbtacking? 	shall I have thumbtacked?
shall you have thumbtacked?
shall he have thumbtacked?
shall we have thumbtacked?
shall you have thumbtacked?
shall they have thumbtacked? 	shall I have been thumbtacking?
shall you have been thumbtacking?
shall he have been thumbtacking?
shall we have been thumbtacking?
shall you have been thumbtacking?
shall they have been thumbtacking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shan't I thumbtack?
shan't you thumbtack?
shan't he thumbtack?
shan't we thumbtack?
shan't you thumbtack?
shan't they thumbtack? 	shan't I be thumbtacking?
shan't you be thumbtacking?
shan't he be thumbtacking?
shan't we be thumbtacking?
shan't you be thumbtacking?
shan't they be thumbtacking? 	shan't I have thumbtacked?
shan't you have thumbtacked?
shan't he have thumbtacked?
shan't we have thumbtacked?
shan't you have thumbtacked?
shan't they have thumbtacked? 	shan't I have been thumbtacking?
shan't you have been thumbtacking?
shan't he have been thumbtacking?
shan't we have been thumbtacking?
shan't you have been thumbtacking?
shan't they have been thumbtacking?