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Decomposition of network into parental species trees. Wiggly arrows indicate conditioning on a coalescence event. Solid arrows indicate conditioning on paths taken at a hybridization node. When a taxon is labeled 
, this can be interpreted as a leaf where 
and 
have been merged, or as a two-taxon tree where there is an infinite branch for the ancestor of 
and 
, guaranteeing that lineages sampled from 
and 
coalesce with each other more recently than with any other taxa.
