As Jimi Oke details out, it does not make a difference what letter the word starts with, but what sound it starts with. Because "typical" starts with a 'y' seem, it should really take 'a' in place of 'an'. "Myself X" is just not even grammatically accurate, that is worse. https://spencerhjkll.mappywiki.com/1838957/the_2_minute_rule_for_tofu_cat_litter_uae