... noted the most difficult individual PT sections in all three pre ... , 14-S4, 18-S2, 21-S3, F97-S3, 22-S4, 24-S2 ... -S4, 70-S4, 71-S3, 72-S2, 76-S2, 78-S1, 81 ... , 68, 69, 70, 73, 75, 76, 78, 81, 82, 83, 85 ... challenging myself with doing the PT A, B, and C LG ...