The "genealogical" method, as we may call it, cannot in strictness be applied to conflated MSS., as their mutual relations can rarely be with certainty disentangled.
We go months with normal, pleasant guests, then all of a sudden we pick up a conflated collection of crazies!
It has long been known, and the knowledge has led to the production of what are known as conflated manuscripts or Misch-codices.
In the following stemma M and N are "mixed" or "conflated" MSS., being formed by the blending of readings from the "pure" or "unmixed" codices A, B and D, E respectively.
A special value attaches to a conflated codex when one of the MSS.