shall underprop
Regular verb: underprop - underproped- underproped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shall underprop
you shall underprop
he shall underprop
we shall underprop
you shall underprop
they shall underprop 	I shall be underproping
you shall be underproping
he shall be underproping
we shall be underproping
you shall be underproping
they shall be underproping	I shall have underproped
you shall have underproped
he shall have underproped
we shall have underproped
you shall have underproped
they shall have underproped	I shall have been underproping
you shall have been underproping
he shall have been underproping
we shall have been underproping
you shall have been underproping
they shall have been underproping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shall not underprop
you shall not underprop
he shall not underprop
we shall not underprop
you shall not underprop
they shall not underprop 	I shall not be underproping
you shall not be underproping
he shall not be underproping
we shall not be underproping
you shall not be underproping
they shall not be underproping	I shall not have underproped
you shall not have underproped
he shall not have underproped
we shall not have underproped
you shall not have underproped
they shall not have underproped	I shall not have been underproping
you shall not have been underproping
he shall not have been underproping
we shall not have been underproping
you shall not have been underproping
they shall not have been underproping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I underprop?
shall you underprop?
shall he underprop?
shall we underprop?
shall you underprop?
shall they underprop? 	shall I be underproping?
shall you be underproping?
shall he be underproping?
shall we be underproping?
shall you be underproping?
shall they be underproping? 	shall I have underproped?
shall you have underproped?
shall he have underproped?
shall we have underproped?
shall you have underproped?
shall they have underproped? 	shall I have been underproping?
shall you have been underproping?
shall he have been underproping?
shall we have been underproping?
shall you have been underproping?
shall they have been underproping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I not underprop?
shall you not underprop?
shall he not underprop?
shall we not underprop?
shall you not underprop?
shall they not underprop? 	shall I not be underproping?
shall you not be underproping?
shall he not be underproping?
shall we not be underproping?
shall you not be underproping?
shall they not be underproping? 	shall I not have underproped?
shall you not have underproped?
shall he not have underproped?
shall we not have underproped?
shall you not have underproped?
shall they not have underproped? 	shall I not have been underproping?
shall you not have been underproping?
shall he not have been underproping?
shall we not have been underproping?
shall you not have been underproping?
shall they not have been underproping?