I shall underestimate you shall underestimate he shall underestimate we shall underestimate you shall underestimate they shall underestimate
V-ing form
I shall be underestimating you shall be underestimating he shall be underestimating we shall be underestimating you shall be underestimating they shall be underestimating
Perfect
I shall have underestimated you shall have underestimated he shall have underestimated we shall have underestimated you shall have underestimated they shall have underestimated
V-ing perfect
I shall have been underestimating you shall have been underestimating he shall have been underestimating we shall have been underestimating you shall have been underestimating they shall have been underestimating
Negation
Simple form
I shall not underestimate you shall not underestimate he shall not underestimate we shall not underestimate you shall not underestimate they shall not underestimate
V-ing form
I shall not be underestimating you shall not be underestimating he shall not be underestimating we shall not be underestimating you shall not be underestimating they shall not be underestimating
Perfect
I shall not have underestimated you shall not have underestimated he shall not have underestimated we shall not have underestimated you shall not have underestimated they shall not have underestimated
V-ing perfect
I shall not have been underestimating you shall not have been underestimating he shall not have been underestimating we shall not have been underestimating you shall not have been underestimating they shall not have been underestimating
Interrogative form
Simple form
shall I underestimate? shall you underestimate? shall he underestimate? shall we underestimate? shall you underestimate? shall they underestimate?
V-ing form
shall I be underestimating? shall you be underestimating? shall he be underestimating? shall we be underestimating? shall you be underestimating? shall they be underestimating?
Perfect
shall I have underestimated? shall you have underestimated? shall he have underestimated? shall we have underestimated? shall you have underestimated? shall they have underestimated?
V-ing perfect
shall I have been underestimating? shall you have been underestimating? shall he have been underestimating? shall we have been underestimating? shall you have been underestimating? shall they have been underestimating?
Interro-negative form
Simple form
shall I not underestimate? shall you not underestimate? shall he not underestimate? shall we not underestimate? shall you not underestimate? shall they not underestimate?
V-ing form
shall I not be underestimating? shall you not be underestimating? shall he not be underestimating? shall we not be underestimating? shall you not be underestimating? shall they not be underestimating?
Perfect
shall I not have underestimated? shall you not have underestimated? shall he not have underestimated? shall we not have underestimated? shall you not have underestimated? shall they not have underestimated?
V-ing perfect
shall I not have been underestimating? shall you not have been underestimating? shall he not have been underestimating? shall we not have been underestimating? shall you not have been underestimating? shall they not have been underestimating?