# not base32 3jzfcijpj2z21 0000000000000 # case-sensitive 3JZFCIJPJ2Z2A # too long/short 3jzfcijpj2z2aa 3jzfcijpj2z2 222 # old dashes syntax not actually supported (TTTT-TTT-TTTT-CC) 3jzf-cij-pj2z-2a # high bit can't be high zzzzzzzzzzzzz kjzfcijpj2z2a