With 7 more Ext. 2 trials from 2023 at https://www.mediafire.com/file/zys4b88nf8079hv/7-more-ext-2-trials-2023.zip/file now we can continue adding some proof questions.
Caringbah Q4, 12b, 14b, 14d, 16b, 16d
Gosford Q5, 10, 13b, 13d, 14a, 16c
Hornsby Girls Q8, 9, 11a, 12b, 13d, 14a, 14b, 15a...