Same as Fig. 8, but for a 50 M_⊙ donor star. The symbols indicate possible initial configurations for AB 7. The shapes of the symbols indicate whether we estimated the O-star mass with the mass ratio from radial velocity variations and the WR mass from its luminosity (circle), estimated the mass ratio with the surface-gravity mass of the O star and the luminosity mass of the WR star (squares), with the spectral-type mass of the O star and the luminosity mass of the WR star (diamonds), estimated the WR mass with the mass ratio and the surface-gravity mass of the O star (triangles up), or the mass ratio and the spectral-type mass (triangles down; see also Table 3).