Copyright for nn source package in Oracular

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: nn
Upstream-Contact: Michael T. Pins 
Source: 

Files: *
Copyright: 1989, 1990 by Kim Fabricius Storm.  All rights reserved.
License: permissive

Files: regexp.c
Copyright: 1986 by University of Toronto. Written by Henry Spencer.
License: permissive

Files: unshar.c
Copyright: none. Written by K. Greer, S. Shafer, and M. Mauldin
License: permissive

Files: decode.c
Copyright: none. Derived from a modified Berkeley original posted on USENET.
License: permissive

Files: fullname.c
Copyright: 1986 by Rick Adams. Derived from the Bnews distribution.
License: permissive

Files: contrib/*
Copyright: Various copyright notices.
License: permissive

Files: debian/*
Copyright: 2020-2022 Cord Beermann 
License: GPL-2+ or permissive
 This package is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.
 .
 This package is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 .
 You should have received a copy of the GNU General Public License
 along with this program. If not, see 
 .
 On Debian systems, the complete text of the GNU General
 Public License version 2 can be found in "/usr/share/common-licenses/GPL-2".

License: permissive
 Permission is granted to anyone to use, modify, and reuse this
 software for any purpose on any computer system, and to redistribute
 it freely, subject to the following restrictions:
 .
 1. The author is not responsible for the consequences of use of this
    software, no matter how awful, even if they arise from defects in it.
 .
 2. The origin of this software must not be misrepresented, either by
    explicit claim or by omission.
 .
 3. Altered versions must be plainly marked as such, and must not be
    misrepresented as being the original software.