English verb conjugation
SHALL CONTRIBUTE

Regular verb: contribute - contributed - contributed

Affirmation

Simple form	V-ing form
I shall contribute you shall contribute she shall contribute we shall contribute you shall contribute they shall contribute	I shall be contributing you shall be contributing she shall be contributing we shall be contributing you shall be contributing they shall be contributing
Perfect	V-ing perfect
I shall have contributed you shall have contributed she shall have contributed we shall have contributed you shall have contributed they shall have contributed	I shall have been contributing you shall have been contributing she shall have been contributing we shall have been contributing you shall have been contributing they shall have been contributing

Negation

Simple form	V-ing form
I shall not contribute you shall not contribute she shall not contribute we shall not contribute you shall not contribute they shall not contribute	I shall not be contributing you shall not be contributing she shall not be contributing we shall not be contributing you shall not be contributing they shall not be contributing
Perfect	V-ing perfect
I shall not have contributed you shall not have contributed she shall not have contributed we shall not have contributed you shall not have contributed they shall not have contributed	I shall not have been contributing you shall not have been contributing she shall not have been contributing we shall not have been contributing you shall not have been contributing they shall not have been contributing

Interrogative form

Simple form	V-ing form
shall I contribute? shall you contribute? shall she contribute? shall we contribute? shall you contribute? shall they contribute?	shall I be contributing? shall you be contributing? shall she be contributing? shall we be contributing? shall you be contributing? shall they be contributing?
Perfect	V-ing perfect
shall I have contributed? shall you have contributed? shall she have contributed? shall we have contributed? shall you have contributed? shall they have contributed?	shall I have been contributing? shall you have been contributing? shall she have been contributing? shall we have been contributing? shall you have been contributing? shall they have been contributing?

Interro-negative form

Simple form	V-ing form
shall I not contribute? shall you not contribute? shall she not contribute? shall we not contribute? shall you not contribute? shall they not contribute?	shall I not be contributing? shall you not be contributing? shall she not be contributing? shall we not be contributing? shall you not be contributing? shall they not be contributing?
Perfect	V-ing perfect
shall I not have contributed? shall you not have contributed? shall she not have contributed? shall we not have contributed? shall you not have contributed? shall they not have contributed?	shall I not have been contributing? shall you not have been contributing? shall she not have been contributing? shall we not have been contributing? shall you not have been contributing? shall they not have been contributing?