What character(s) does a bitstring is encoded in each character set?

Bitstring:
Binary  Hexadecimal 
EncodingBitstringCharacter(s)
ISO-8859-13f818f3f3f3f3f3f3f3f61????????a
SJIS-WIN3f818f3f3f3f3f3f3f3f61?¥???????a
EUC-JP3f818f3f3f3f3f3f3f3f61????????a
UTF-83f818f3f3f3f3f3f3f3f61??????????a
UHC3f818f3f3f3f3f3f3f3f61?걦???????a