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

Bitstring:
Binary  Hexadecimal 
EncodingBitstringCharacter(s)
ISO-8859-181803f3f3f3f3f6b€?????k
SJIS-WIN81803f3f3f3f3f6b÷?????k
EUC-JP81803f3f3f3f3f6b???????k
UTF-881803f3f3f3f3f6b???????k
UHC81803f3f3f3f3f6b??????k