English verb conjugation
SHALL TIFF

Regular verb: tiff - tiffed - tiffed

Affirmation

Simple form	V-ing form
I shall tiff you shall tiff she shall tiff we shall tiff you shall tiff they shall tiff	I shall be tiffing you shall be tiffing she shall be tiffing we shall be tiffing you shall be tiffing they shall be tiffing
Perfect	V-ing perfect
I shall have tiffed you shall have tiffed she shall have tiffed we shall have tiffed you shall have tiffed they shall have tiffed	I shall have been tiffing you shall have been tiffing she shall have been tiffing we shall have been tiffing you shall have been tiffing they shall have been tiffing

Negation

Simple form	V-ing form
I shall not tiff you shall not tiff she shall not tiff we shall not tiff you shall not tiff they shall not tiff	I shall not be tiffing you shall not be tiffing she shall not be tiffing we shall not be tiffing you shall not be tiffing they shall not be tiffing
Perfect	V-ing perfect
I shall not have tiffed you shall not have tiffed she shall not have tiffed we shall not have tiffed you shall not have tiffed they shall not have tiffed	I shall not have been tiffing you shall not have been tiffing she shall not have been tiffing we shall not have been tiffing you shall not have been tiffing they shall not have been tiffing

Interrogative form

Simple form	V-ing form
shall I tiff? shall you tiff? shall she tiff? shall we tiff? shall you tiff? shall they tiff?	shall I be tiffing? shall you be tiffing? shall she be tiffing? shall we be tiffing? shall you be tiffing? shall they be tiffing?
Perfect	V-ing perfect
shall I have tiffed? shall you have tiffed? shall she have tiffed? shall we have tiffed? shall you have tiffed? shall they have tiffed?	shall I have been tiffing? shall you have been tiffing? shall she have been tiffing? shall we have been tiffing? shall you have been tiffing? shall they have been tiffing?

Interro-negative form

Simple form	V-ing form
shall I not tiff? shall you not tiff? shall she not tiff? shall we not tiff? shall you not tiff? shall they not tiff?	shall I not be tiffing? shall you not be tiffing? shall she not be tiffing? shall we not be tiffing? shall you not be tiffing? shall they not be tiffing?
Perfect	V-ing perfect
shall I not have tiffed? shall you not have tiffed? shall she not have tiffed? shall we not have tiffed? shall you not have tiffed? shall they not have tiffed?	shall I not have been tiffing? shall you not have been tiffing? shall she not have been tiffing? shall we not have been tiffing? shall you not have been tiffing? shall they not have been tiffing?