As per the official documentation the TRY parameter can look something like this...
TRY esianrtolcdugmphbyfvkwzESIANRTOLCDUGMPHBYFVKWZ'
In this example - j, q and x capital and small letters (jqx JQX) are missing.
Is there any specific reason that the 3 characters were not included in the list? Instead of writing a, b, c, d the list starts with e, s, i. Is there any reason behind the ordering?