capabilities: SORT
messages: all

ok sort (subject) us-ascii all
* sort 9 10 14 2 12 15 8 4 1 3 5 11 6 7 13

ok sort (reverse subject) us-ascii all
* sort 13 7 6 11 5 3 1 4 8 15 12 2 14 10 9

ok sort (subject reverse size) us-ascii all
* sort 10 9 14 12 2 15 8 4 1 11 5 3 6 13 7