... the most difficult individual PT sections in all three ... 7-S4,17-S2, 17-S3, F97-S1, 23-S3, 28 ... , 22-S4, 24-S2, 26-S2, 27-S1, 28-S3 ... S2, 45-S1, 62-S2, 69-S4, 70-S4, 71-S3, 72-S2, 76-S2 ... , 78-S1, 81-S2, 84-S3< ... myself with doing the PT A, B, and ...