x1 x0 a2 a1 a0 y7 y6 y5 y4 y3 y2 y1 y0 o 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 0 0 0 0 0 0 0 1 0 0 1 0 1 0 0 0 0 0 0 0 0 1 0 0 1 0 1 1 0 0 0 0 0 0 0 1 0 0 1 1 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 1 0 0 0 0 0 0 0 1 0 0 1 1 1 0 0 0 0 0 0 0 0 1 0 0 1 1 1 1 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 1 0 0 0 0 0 0 1 0 0 1 0 0 1 0 0 0 0 0 0 1 0 0 0 1 0 0 1 1 0 0 0 0 1 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 1 0 1 0 0 1 0 0 0 0 0 0 1 0 1 1 0 0 1 0 0 0 0 0 0 0 1 0 1 1 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 0 1 0 0 0 0 0 0 1 1 0 1 1 0 1 0 0 0 0 0 1 0 0 1 0 1 1 0 1 1 0 0 0 1 1 0 1 1 0 1 1 1 0 0 0 1 0 1 0 0 0 1 0 1 1 1 0 1 1 1 1 1 0 0 1 1 1 1 1 1 1 0 x x x x x x x x 1 1 1 1 1 1 x x x x x x x x 1 y0 = (not x1 and not x2) or ((x1 and not x2) and (not a2 and not 1 and not a0)) or (x1 and x2) y1 = (a0 and x1 and not x0) or (x1 and x0 and not a2 and not a1 and a0) or (x1 and x0 and not a2 and a1 and a0) or (x1 and x0 and a2 and not a1 and a0)