shall backfill
Verbo regular: backfill - backfilled- backfilled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'll backfill
you'll backfill
she'll backfill
we'll backfill
you'll backfill
they'll backfill 	I'll be backfilling
you'll be backfilling
she'll be backfilling
we'll be backfilling
you'll be backfilling
they'll be backfilling	I'll have backfilled
you'll have backfilled
she'll have backfilled
we'll have backfilled
you'll have backfilled
they'll have backfilled	I'll have been backfilling
you'll have been backfilling
she'll have been backfilling
we'll have been backfilling
you'll have been backfilling
they'll have been backfilling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shan't backfill
you shan't backfill
she shan't backfill
we shan't backfill
you shan't backfill
they shan't backfill 	I shan't be backfilling
you shan't be backfilling
she shan't be backfilling
we shan't be backfilling
you shan't be backfilling
they shan't be backfilling	I shan't have backfilled
you shan't have backfilled
she shan't have backfilled
we shan't have backfilled
you shan't have backfilled
they shan't have backfilled	I shan't have been backfilling
you shan't have been backfilling
she shan't have been backfilling
we shan't have been backfilling
you shan't have been backfilling
they shan't have been backfilling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shall I backfill?
shall you backfill?
shall she backfill?
shall we backfill?
shall you backfill?
shall they backfill? 	shall I be backfilling?
shall you be backfilling?
shall she be backfilling?
shall we be backfilling?
shall you be backfilling?
shall they be backfilling? 	shall I have backfilled?
shall you have backfilled?
shall she have backfilled?
shall we have backfilled?
shall you have backfilled?
shall they have backfilled? 	shall I have been backfilling?
shall you have been backfilling?
shall she have been backfilling?
shall we have been backfilling?
shall you have been backfilling?
shall they have been backfilling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shan't I backfill?
shan't you backfill?
shan't she backfill?
shan't we backfill?
shan't you backfill?
shan't they backfill? 	shan't I be backfilling?
shan't you be backfilling?
shan't she be backfilling?
shan't we be backfilling?
shan't you be backfilling?
shan't they be backfilling? 	shan't I have backfilled?
shan't you have backfilled?
shan't she have backfilled?
shan't we have backfilled?
shan't you have backfilled?
shan't they have backfilled? 	shan't I have been backfilling?
shan't you have been backfilling?
shan't she have been backfilling?
shan't we have been backfilling?
shan't you have been backfilling?
shan't they have been backfilling?