shall checker
Regular verb: checker - checkered- checkered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shall checker
you shall checker
she shall checker
we shall checker
you shall checker
they shall checker 	I shall be checkering
you shall be checkering
she shall be checkering
we shall be checkering
you shall be checkering
they shall be checkering	I shall have checkered
you shall have checkered
she shall have checkered
we shall have checkered
you shall have checkered
they shall have checkered	I shall have been checkering
you shall have been checkering
she shall have been checkering
we shall have been checkering
you shall have been checkering
they shall have been checkering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shall not checker
you shall not checker
she shall not checker
we shall not checker
you shall not checker
they shall not checker 	I shall not be checkering
you shall not be checkering
she shall not be checkering
we shall not be checkering
you shall not be checkering
they shall not be checkering	I shall not have checkered
you shall not have checkered
she shall not have checkered
we shall not have checkered
you shall not have checkered
they shall not have checkered	I shall not have been checkering
you shall not have been checkering
she shall not have been checkering
we shall not have been checkering
you shall not have been checkering
they shall not have been checkering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I checker?
shall you checker?
shall she checker?
shall we checker?
shall you checker?
shall they checker? 	shall I be checkering?
shall you be checkering?
shall she be checkering?
shall we be checkering?
shall you be checkering?
shall they be checkering? 	shall I have checkered?
shall you have checkered?
shall she have checkered?
shall we have checkered?
shall you have checkered?
shall they have checkered? 	shall I have been checkering?
shall you have been checkering?
shall she have been checkering?
shall we have been checkering?
shall you have been checkering?
shall they have been checkering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I not checker?
shall you not checker?
shall she not checker?
shall we not checker?
shall you not checker?
shall they not checker? 	shall I not be checkering?
shall you not be checkering?
shall she not be checkering?
shall we not be checkering?
shall you not be checkering?
shall they not be checkering? 	shall I not have checkered?
shall you not have checkered?
shall she not have checkered?
shall we not have checkered?
shall you not have checkered?
shall they not have checkered? 	shall I not have been checkering?
shall you not have been checkering?
shall she not have been checkering?
shall we not have been checkering?
shall you not have been checkering?
shall they not have been checkering?