/                  \
    |      [start]      |
    |-------------------|
    |  subs   |  chans  |
    |   [nws] |   [tec] |
    |   [sec] |   [pol] |
    |   [trc] |   [rnd] |
    |   [gnu] |   [baf] |
    |-------------------|
    |      - etc -      |
    | [tpb] [kic] [hdb] |
    \                  /