shall understudy
Regular verb: understudy - understudied- understudied

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shall understudy
you shall understudy
he shall understudy
we shall understudy
you shall understudy
they shall understudy 	I shall be understudying
you shall be understudying
he shall be understudying
we shall be understudying
you shall be understudying
they shall be understudying	I shall have understudied
you shall have understudied
he shall have understudied
we shall have understudied
you shall have understudied
they shall have understudied	I shall have been understudying
you shall have been understudying
he shall have been understudying
we shall have been understudying
you shall have been understudying
they shall have been understudying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shall not understudy
you shall not understudy
he shall not understudy
we shall not understudy
you shall not understudy
they shall not understudy 	I shall not be understudying
you shall not be understudying
he shall not be understudying
we shall not be understudying
you shall not be understudying
they shall not be understudying	I shall not have understudied
you shall not have understudied
he shall not have understudied
we shall not have understudied
you shall not have understudied
they shall not have understudied	I shall not have been understudying
you shall not have been understudying
he shall not have been understudying
we shall not have been understudying
you shall not have been understudying
they shall not have been understudying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I understudy?
shall you understudy?
shall he understudy?
shall we understudy?
shall you understudy?
shall they understudy? 	shall I be understudying?
shall you be understudying?
shall he be understudying?
shall we be understudying?
shall you be understudying?
shall they be understudying? 	shall I have understudied?
shall you have understudied?
shall he have understudied?
shall we have understudied?
shall you have understudied?
shall they have understudied? 	shall I have been understudying?
shall you have been understudying?
shall he have been understudying?
shall we have been understudying?
shall you have been understudying?
shall they have been understudying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I not understudy?
shall you not understudy?
shall he not understudy?
shall we not understudy?
shall you not understudy?
shall they not understudy? 	shall I not be understudying?
shall you not be understudying?
shall he not be understudying?
shall we not be understudying?
shall you not be understudying?
shall they not be understudying? 	shall I not have understudied?
shall you not have understudied?
shall he not have understudied?
shall we not have understudied?
shall you not have understudied?
shall they not have understudied? 	shall I not have been understudying?
shall you not have been understudying?
shall he not have been understudying?
shall we not have been understudying?
shall you not have been understudying?
shall they not have been understudying?