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

Bitstring:
Binary  Hexadecimal 
EncodingBitstringCharacter(s)
ISO-8859-13f818b3f3f3f3f3f3f3f3f3f3f61?‹??????????a
SJIS-WIN3f818b3f3f3f3f3f3f3f3f3f3f61?°??????????a
EUC-JP3f818b3f3f3f3f3f3f3f3f3f3f61?????????????a
UTF-83f818b3f3f3f3f3f3f3f3f3f3f61?????????????a
UHC3f818b3f3f3f3f3f3f3f3f3f3f61?걢??????????a