$ fq -d asn1_ber dv tc21.ber
   |00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|.{}: tc21.ber (asn1_ber) 0x0-0x8 (8)
0x0|06                                             |.               |  class: "universal" (0) 0x0-0x0.2 (0.2)
0x0|06                                             |.               |  form: "primitive" (0) 0x0.2-0x0.3 (0.1)
0x0|06                                             |.               |  tag: "object_identifier" (0x6) 0x0.3-0x1 (0.5)
0x0|   06                                          | .              |  length: 6 0x1-0x2 (1)
   |                                               |                |  value[0:4]: 0x2-0x8 (6)
0x0|      80                                       |  .             |    [0]: 3 oid 0x2-0x3 (1)
0x0|      80                                       |  .             |    [1]: 8 oid 0x2-0x3 (1)
0x0|         80 51                                 |   .Q           |    [2]: 81 oid 0x3-0x5 (2)
0x0|               80 80 01|                       |     ...|       |    [3]: 1 oid 0x5-0x8 (3)