shall underheat
Regular verb: underheat - underheated- underheated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'll underheat
you'll underheat
he'll underheat
we'll underheat
you'll underheat
they'll underheat 	I'll be underheating
you'll be underheating
he'll be underheating
we'll be underheating
you'll be underheating
they'll be underheating	I'll have underheated
you'll have underheated
he'll have underheated
we'll have underheated
you'll have underheated
they'll have underheated	I'll have been underheating
you'll have been underheating
he'll have been underheating
we'll have been underheating
you'll have been underheating
they'll have been underheating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shan't underheat
you shan't underheat
he shan't underheat
we shan't underheat
you shan't underheat
they shan't underheat 	I shan't be underheating
you shan't be underheating
he shan't be underheating
we shan't be underheating
you shan't be underheating
they shan't be underheating	I shan't have underheated
you shan't have underheated
he shan't have underheated
we shan't have underheated
you shan't have underheated
they shan't have underheated	I shan't have been underheating
you shan't have been underheating
he shan't have been underheating
we shan't have been underheating
you shan't have been underheating
they shan't have been underheating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I underheat?
shall you underheat?
shall he underheat?
shall we underheat?
shall you underheat?
shall they underheat? 	shall I be underheating?
shall you be underheating?
shall he be underheating?
shall we be underheating?
shall you be underheating?
shall they be underheating? 	shall I have underheated?
shall you have underheated?
shall he 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 he 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 	
shan't I underheat?
shan't you underheat?
shan't he underheat?
shan't we underheat?
shan't you underheat?
shan't they underheat? 	shan't I be underheating?
shan't you be underheating?
shan't he be underheating?
shan't we be underheating?
shan't you be underheating?
shan't they be underheating? 	shan't I have underheated?
shan't you have underheated?
shan't he have underheated?
shan't we have underheated?
shan't you have underheated?
shan't they have underheated? 	shan't I have been underheating?
shan't you have been underheating?
shan't he have been underheating?
shan't we have been underheating?
shan't you have been underheating?
shan't they have been underheating?