negate
upgrade_a0.pbm
upgrade_a1.pbm
upgrade_a2.pbm
upgrade_a3.pbm
upgrade_a4.pbm
upgrade_b0.pbm
upgrade_b1.pbm
upgrade_c0.pbm
upgrade_c1.pbm
upgrade_c2.pbm
upgrade_c3.pbm
upgrade_c4.pbm
upgrade_c5.pbm
upgrade_c6.pbm
upgrade_c7.pbm
upgrade_d0.pbm
upgrade_d1.pbm
upgrade_d2.pbm
upgrade_d3.pbm
upgrade_d4.pbm
upgrade_d5.pbm
upgrade_d6.pbm
upgrade_d7.pbm
upgrade_e0.pbm
upgrade_e1.pbm
upgrade_e2.pbm
upgrade_e3.pbm
upgrade_e4.pbm
upgrade_e5.pbm
upgrade_e6.pbm
upgrade_e7.pbm
upgrade_f0.pbm
upgrade_f1.pbm
upgrade_f2.pbm
upgrade_f3.pbm
upgrade_g0.pbm
upgrade_h0.pbm
upgrade_i0.pbm
upgrade_i1.pbm
upgrade_i2.pbm
upgrade_i3.pbm
upgrade_j0.pbm
upgrade_j1.pbm
upgrade_j2.pbm
upgrade_j3.pbm
upgrade_j4.pbm
upgrade_j5.pbm
upgrade_j6.pbm
upgrade_j7.pbm
upgrade_x0.pbm