$ fq -d asn1_ber d tc48.ber
    |00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|.{}: tc48.ber (asn1_ber)
    |                                               |                |  error: asn1_ber: error at position 0xd: unusedBitsCount 15 > 7
0x00|23                                             |#               |  class: "universal" (0)
0x00|23                                             |#               |  form: "constructed" (1)
0x00|23                                             |#               |  tag: "bit_string" (0x3)
0x00|   80                                          | .              |  length: "indefinite" (0)
    |                                               |                |  constructed[0:3]:
    |                                               |                |    [0]{}: object
0x00|      03                                       |  .             |      class: "universal" (0)
0x00|      03                                       |  .             |      form: "primitive" (0)
0x00|      03                                       |  .             |      tag: "bit_string" (0x3)
0x00|         02                                    |   .            |      length: 2
0x00|            00                                 |    .           |      unused_bits_count: 0
0x00|               01                              |     .          |      value: raw bits
    |                                               |                |    [1]{}: object
0x00|                  03                           |      .         |      class: "universal" (0)
0x00|                  03                           |      .         |      form: "primitive" (0)
0x00|                  03                           |      .         |      tag: "bit_string" (0x3)
0x00|                     02                        |       .        |      length: 2
0x00|                        00                     |        .       |      unused_bits_count: 0
0x00|                           01                  |         .      |      value: raw bits
    |                                               |                |    [2]{}: object
0x00|                              03               |          .     |      class: "universal" (0)
0x00|                              03               |          .     |      form: "primitive" (0)
0x00|                              03               |          .     |      tag: "bit_string" (0x3)
0x00|                                 02            |           .    |      length: 2
0x00|                                    0f         |            .   |      unused_bits_count: 15
0x00|                                       0f 00 00|             ...|  gap0: raw bits