I tried treating them as unicode, but out of 8 16-bit characters, the 4th is in the private use area (in CSUR, it's a digit in Zirinka, which doesn't seem to have digits) and the 5th is a High Surrogate. (The others are the Bengali currency symbol for a 16th, a piece of Hangul Jamo, and 4 obscure Unihan characters.)