shall underprice
Regular verb: underprice - underpriced- underpriced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shall underprice
you shall underprice
he shall underprice
we shall underprice
you shall underprice
they shall underprice 	I shall be underpricing
you shall be underpricing
he shall be underpricing
we shall be underpricing
you shall be underpricing
they shall be underpricing	I shall have underpriced
you shall have underpriced
he shall have underpriced
we shall have underpriced
you shall have underpriced
they shall have underpriced	I shall have been underpricing
you shall have been underpricing
he shall have been underpricing
we shall have been underpricing
you shall have been underpricing
they shall have been underpricing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shall not underprice
you shall not underprice
he shall not underprice
we shall not underprice
you shall not underprice
they shall not underprice 	I shall not be underpricing
you shall not be underpricing
he shall not be underpricing
we shall not be underpricing
you shall not be underpricing
they shall not be underpricing	I shall not have underpriced
you shall not have underpriced
he shall not have underpriced
we shall not have underpriced
you shall not have underpriced
they shall not have underpriced	I shall not have been underpricing
you shall not have been underpricing
he shall not have been underpricing
we shall not have been underpricing
you shall not have been underpricing
they shall not have been underpricing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I underprice?
shall you underprice?
shall he underprice?
shall we underprice?
shall you underprice?
shall they underprice? 	shall I be underpricing?
shall you be underpricing?
shall he be underpricing?
shall we be underpricing?
shall you be underpricing?
shall they be underpricing? 	shall I have underpriced?
shall you have underpriced?
shall he have underpriced?
shall we have underpriced?
shall you have underpriced?
shall they have underpriced? 	shall I have been underpricing?
shall you have been underpricing?
shall he have been underpricing?
shall we have been underpricing?
shall you have been underpricing?
shall they have been underpricing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I not underprice?
shall you not underprice?
shall he not underprice?
shall we not underprice?
shall you not underprice?
shall they not underprice? 	shall I not be underpricing?
shall you not be underpricing?
shall he not be underpricing?
shall we not be underpricing?
shall you not be underpricing?
shall they not be underpricing? 	shall I not have underpriced?
shall you not have underpriced?
shall he not have underpriced?
shall we not have underpriced?
shall you not have underpriced?
shall they not have underpriced? 	shall I not have been underpricing?
shall you not have been underpricing?
shall he not have been underpricing?
shall we not have been underpricing?
shall you not have been underpricing?
shall they not have been underpricing?