Package: aa
Version: 1
Depends: bb , cc
Architecture: amd64
Description: depends on an essential package and a 
 not essential package

Package: bb
Version: 1
Architecture: amd64

Package: cc
Version: 1
Architecture: amd64
Essential: true

Package: dd
Version: 1
Architecture: amd64
Depends: ee
Essential: true
Description: it is an essential package that depends
 on a not essential package

Package: ee
Version: 1
Architecture: amd64

