Satish and his colleagues investigated the case of Timothy Ray Brown. They had genetic sequences from Brown's viral population before his marrow transplant, sequences from viruses that were supposedly detected in Brown after the transplant, sequences from common lab strains of HIV, and sequences from HIV in unrelated individuals. They used these sequences to build phylogenies. Sketch the sort of phylogeny you would expect to see if Brown were completely cured of HIV and contamination was to blame for detecting HIV in Brown's body. Sketch the sort of phylogeny you would expect to see if Brown were not completely cured of HIV and the results were not spurious.