Twin directories of B:

[DIR]  ftp://ftp.unb.ca/pub/dept/gge/IERS/Bulletins/B/
[DIR]  ftp://ftp.eenet.ee/pub/cpan/modules/by-module/B/
[DIR]  ftp://ftp.eenet.ee/pub/cpan/modules/by-category/04_Operating_System_Interfaces/B/
[DIR]  ftp://ftp.eenet.ee/pub/cpan/authors/id/B/
[DIR]  ftp://ftp.eenet.ee/pub/cpan/doc/manual/html/lib/B/
[DIR]  ftp://ftp.eenet.ee/pub/cpan/modules/by-category/02_Language_Extensions/B/
[DIR]  ftp://ftp.eenet.ee/pub/cpan/modules/by-category/02_Perl_Core_Modules/B/
[DIR]  ftp://ftp.eenet.ee/pub/cpan/authors/id/C/CW/CWELCH/O/B/
[DIR]  ftp://ftp.cpsc.ucalgary.ca/pub/images/vision/photo-data/47_TUC/B/
[DIR]  ftp://ftp.eutelia.it/pub2/CPAN_Mirror/modules/by-module/B/
[DIR]  ftp://ftp.eutelia.it/pub2/CPAN_Mirror/modules/by-category/04_Operating_System_Interfaces/B/
[DIR]  ftp://ftp.eutelia.it/pub2/CPAN_Mirror/authors/id/B/
[DIR]  ftp://ftp.eutelia.it/pub2/CPAN_Mirror/doc/manual/html/lib/B/
[DIR]  ftp://ftp.eutelia.it/pub2/CPAN_Mirror/modules/by-category/02_Language_Extensions/B/
[DIR]  ftp://ftp.eutelia.it/pub2/CPAN_Mirror/modules/by-category/02_Perl_Core_Modules/B/
[DIR]  ftp://ftp.eutelia.it/pub2/CPAN_Mirror/authors/id/C/CW/CWELCH/O/B/
[DIR]  ftp://ftp.saintjoe.edu/pub/CPAN/modules/by-module/B/
[DIR]  ftp://ftp.saintjoe.edu/pub/CPAN/modules/by-category/99_Not_In_Modulelist/B/
[DIR]  ftp://ftp.saintjoe.edu/pub/CPAN/modules/by-category/04_Operating_System_Interfaces/B/
[DIR]  ftp://ftp.saintjoe.edu/pub/CPAN/authors/id/B/
[DIR]  ftp://ftp.saintjoe.edu/pub/CPAN/doc/manual/html/lib/B/
[DIR]  ftp://ftp.saintjoe.edu/pub/CPAN/modules/by-category/02_Language_Extensions/B/
[DIR]  ftp://ftp.saintjoe.edu/pub/CPAN/modules/by-category/02_Perl_Core_Modules/B/
[DIR]  ftp://ftp.saintjoe.edu/pub/CPAN/authors/id/C/CW/CWELCH/O/B/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/tex-archive/systems/texlive/tlnet/2008/tlpkg/installer/perllib/B/
[DIR]  ftp://ftp.psg.com/pub/modula-2/gpm/TERM/B/
[DIR]  ftp://ftp.psg.com/pub/modula-2/gpm/B/
[DIR]  ftp://ftp.psg.com/pub/modula-2/gpm/mopp/B/
[DIR]  ftp://ftp.dcc.uchile.cl/web/ciencia/CienciaChile/.cgi-bin.old/Counter/digits/B/
[DIR]  ftp://ftp.dcc.uchile.cl/web/ciencia/CienciaChile/.cgi-bin.old/wwwcount2.4/wcount/digits/B/
[DIR]  ftp://ftp.fh-biberach.de/pub/www/vermessung/Labor für Vermessung/Informationen/Klausuren/B/
[DIR]  ftp://ftp.42.org/pub/B/
[DIR]  ftp://ftp.kfki.hu/pub/packages/perl/CPAN/modules/by-module/B/
[DIR]  ftp://ftp.kfki.hu/pub/packages/perl/CPAN/authors/id/B/
[DIR]  ftp://ftp.kfki.hu/pub/packages/perl/CPAN/doc/manual/html/lib/B/
[DIR]  ftp://ftp.kfki.hu/pub/packages/perl/CPAN/modules/by-category/02_Language_Extensions/B/
[DIR]  ftp://ftp.kfki.hu/pub/packages/perl/CPAN/modules/by-category/02_Perl_Core_Modules/B/
[DIR]  ftp://ftp.kfki.hu/pub/packages/perl/CPAN/modules/by-category/04_Operating_System_Interfaces/B/
[DIR]  ftp://ftp.kfki.hu/pub/packages/perl/CPAN/authors/id/C/CW/CWELCH/O/B/
[DIR]  ftp://62.128.1.71/pub/CPAN/authors/id/B/
[DIR]  ftp://62.128.1.71/pub/CPAN/modules/by-module/B/
[DIR]  ftp://62.128.1.71/pub/CPAN/authors/id/C/CW/CWELCH/O/B/
[DIR]  ftp://62.128.1.71/pub/CPAN/doc/manual/html/lib/B/
[DIR]  ftp://62.128.1.71/pub/CPAN/modules/by-category/02_Perl_Core_Modules/B/
[DIR]  ftp://62.128.1.71/pub/CPAN/modules/by-category/04_Operating_System_Interfaces/B/
[DIR]  ftp://62.128.1.71/pub/CPAN/modules/by-category/02_Language_Extensions/B/
[DIR]  ftp://ftp.rdc.cl/pub/Unix/Linux/Perl/CPAN/modules/by-module/B/
[DIR]  ftp://ftp.rdc.cl/pub/Unix/Linux/Perl/CPAN/authors/id/B/
[DIR]  ftp://ftp.rdc.cl/pub/Unix/Linux/Perl/CPAN/doc/manual/html/lib/B/
[DIR]  ftp://ftp.rdc.cl/pub/Unix/Linux/Perl/CPAN/modules/by-category/02_Language_Extensions/B/