English verb conjugation
SHALL OVERESTIMATE

Regular verb: overestimate - overestimated - overestimated

Affirmation

Simple form	V-ing form
I shall overestimate you shall overestimate he shall overestimate we shall overestimate you shall overestimate they shall overestimate	I shall be overestimating you shall be overestimating he shall be overestimating we shall be overestimating you shall be overestimating they shall be overestimating
Perfect	V-ing perfect
I shall have overestimated you shall have overestimated he shall have overestimated we shall have overestimated you shall have overestimated they shall have overestimated	I shall have been overestimating you shall have been overestimating he shall have been overestimating we shall have been overestimating you shall have been overestimating they shall have been overestimating

Negation

Simple form	V-ing form
I shall not overestimate you shall not overestimate he shall not overestimate we shall not overestimate you shall not overestimate they shall not overestimate	I shall not be overestimating you shall not be overestimating he shall not be overestimating we shall not be overestimating you shall not be overestimating they shall not be overestimating
Perfect	V-ing perfect
I shall not have overestimated you shall not have overestimated he shall not have overestimated we shall not have overestimated you shall not have overestimated they shall not have overestimated	I shall not have been overestimating you shall not have been overestimating he shall not have been overestimating we shall not have been overestimating you shall not have been overestimating they shall not have been overestimating

Interrogative form

Simple form	V-ing form
shall I overestimate? shall you overestimate? shall he overestimate? shall we overestimate? shall you overestimate? shall they overestimate?	shall I be overestimating? shall you be overestimating? shall he be overestimating? shall we be overestimating? shall you be overestimating? shall they be overestimating?
Perfect	V-ing perfect
shall I have overestimated? shall you have overestimated? shall he have overestimated? shall we have overestimated? shall you have overestimated? shall they have overestimated?	shall I have been overestimating? shall you have been overestimating? shall he have been overestimating? shall we have been overestimating? shall you have been overestimating? shall they have been overestimating?

Interro-negative form

Simple form	V-ing form
shall I not overestimate? shall you not overestimate? shall he not overestimate? shall we not overestimate? shall you not overestimate? shall they not overestimate?	shall I not be overestimating? shall you not be overestimating? shall he not be overestimating? shall we not be overestimating? shall you not be overestimating? shall they not be overestimating?
Perfect	V-ing perfect
shall I not have overestimated? shall you not have overestimated? shall he not have overestimated? shall we not have overestimated? shall you not have overestimated? shall they not have overestimated?	shall I not have been overestimating? shall you not have been overestimating? shall he not have been overestimating? shall we not have been overestimating? shall you not have been overestimating? shall they not have been overestimating?