module add8se_8XS (
    A,
    B,
    O
);

input [7:0] A;
input [7:0] B;
output [8:0] O;
assign O[8] = A[7];
assign O[7] = A[7];
assign O[6] = A[6];
assign O[5] = B[6];
assign O[4] = A[5];
assign O[3] = B[3];
assign O[2] = A[5];
assign O[1] = A[1];
assign O[0] = 1'b0;

endmodule