I understand that I'm not answering your question (which is answered above), but I have an explanation for this behaviour:

The first character is always a Greek Gamma, the second is always a o-umlaut or o-diaeresis (or maybe it's a Greek Omicron?). The third character encodes the card's suit: u-acute = hearts, a-underscore(?) = diamonds, capital Enya = clubs, a-acute = spades.

This happens when UTF-8-encoded bytes get interpreted as CP437-encoded bytes:

$ echo '♣ ♦ ♥ ♠' | iconv -f cp437 # my system is UTF-8
ΓÖú ΓÖª ΓÖÑ ΓÖá

The author of the code assumed that your command line would understand UTF-8, but you are probably running the code in Windows cmd.exe, which doesn't. According to Wikipedia, you may still see those characters if you print qq{\x{03}\x{04}\x{05}\x{06}}, although they are not formally defined as part of the code page.