I believe Doha is counted as part of zone 5
C&M for C = 30,000 + £210 + taxes return
C&M for F = 50,000 + £350 + taxes return
note you cannot do C&M in F on LH, it is miles only and a supplement on top for the privilege!
not sure what routes will actually have F seats but you can check possible routes o staralliance.com