... noted the most difficult individual PT sections in all three ... 8-S4, 9-S2, 10-S4, 11-S4, 12-S4, 14-S2, 14-S4, 18-S2 ... , 21-S3, F97-S3, 22-S4 ... -S1, 62-S2, 69-S4, 70-S4, 71-S3, 72-S2 ... . A lot of the LR sections listed above have outdated ...