EABRO> ;
--- Output:
EABRO> A B;
--- Output: O
EABRO> A B;
--- Output:
EABRO> R;
--- Output:
EABRO> A B;
--- Output: O
EABRO> A B;
--- Output:
EABRO> R;
--- Output:
EABRO> B;
--- Output:
EABRO> A;
--- Output: O
EABRO> A;
--- Output:
EABRO> B;
--- Output:
EABRO> R B;
--- Output:
EABRO> A;
--- Output:
EABRO> ;
--- Output:
EABRO> B;
--- Output: O