shall underheat
Regular verb: underheat - underheated- underheated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shall underheat
you shall underheat
she shall underheat
we shall underheat
you shall underheat
they shall underheat 	I shall be underheating
you shall be underheating
she shall be underheating
we shall be underheating
you shall be underheating
they shall be underheating	I shall have underheated
you shall have underheated
she shall have underheated
we shall have underheated
you shall have underheated
they shall have underheated	I shall have been underheating
you shall have been underheating
she shall have been underheating
we shall have been underheating
you shall have been underheating
they shall have been underheating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shall not underheat
you shall not underheat
she shall not underheat
we shall not underheat
you shall not underheat
they shall not underheat 	I shall not be underheating
you shall not be underheating
she shall not be underheating
we shall not be underheating
you shall not be underheating
they shall not be underheating	I shall not have underheated
you shall not have underheated
she shall not have underheated
we shall not have underheated
you shall not have underheated
they shall not have underheated	I shall not have been underheating
you shall not have been underheating
she shall not have been underheating
we shall not have been underheating
you shall not have been underheating
they shall not have been underheating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I underheat?
shall you underheat?
shall she underheat?
shall we underheat?
shall you underheat?
shall they underheat? 	shall I be underheating?
shall you be underheating?
shall she be underheating?
shall we be underheating?
shall you be underheating?
shall they be underheating? 	shall I have underheated?
shall you have underheated?
shall she have underheated?
shall we have underheated?
shall you have underheated?
shall they have underheated? 	shall I have been underheating?
shall you have been underheating?
shall she have been underheating?
shall we have been underheating?
shall you have been underheating?
shall they have been underheating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I not underheat?
shall you not underheat?
shall she not underheat?
shall we not underheat?
shall you not underheat?
shall they not underheat? 	shall I not be underheating?
shall you not be underheating?
shall she not be underheating?
shall we not be underheating?
shall you not be underheating?
shall they not be underheating? 	shall I not have underheated?
shall you not have underheated?
shall she not have underheated?
shall we not have underheated?
shall you not have underheated?
shall they not have underheated? 	shall I not have been underheating?
shall you not have been underheating?
shall she not have been underheating?
shall we not have been underheating?
shall you not have been underheating?
shall they not have been underheating?