deb https://old-releases.ubuntu.com/ubuntu focal main restricted universe multiverse
deb-src https://old-releases.ubuntu.com/ubuntu focal main restricted universe multiverse

deb https://old-releases.ubuntu.com/ubuntu focal-security main restricted universe multiverse
deb-src https://old-releases.ubuntu.com/ubuntu focal-security main restricted universe multiverse

deb https://old-releases.ubuntu.com/ubuntu focal-updates main restricted universe multiverse
deb-src https://old-releases.ubuntu.com/ubuntu focal-updates main restricted universe multiverse

deb https://old-releases.ubuntu.com/ubuntu focal-proposed main restricted universe multiverse
deb-src https://old-releases.ubuntu.com/ubuntu focal-proposed main restricted universe multiverse

deb https://old-releases.ubuntu.com/ubuntu focal-backports main restricted universe multiverse
deb-src https://old-releases.ubuntu.com/ubuntu focal-backports main restricted universe multiverse