Passage: West Timor is part of the East Nusa Tenggara province. It was formerly split into the City of Kupang (a kabupaten or regency-level administrative area) and four regencies (kabupaten); from west to east these are: Kupang, Timor Tengah Selatan (South Central Timor), Timor Tengah Utara (North Central Timor) and Belu. However, a fifth regency – Malaka – was in 2012 formed from the southern half of Belu Regency. Note the administrative area has shrunk as Rote Ndao Regency (Rote and Ndoa islands to the southwest) and Sabu Raijua Regency (the Savu Islands further west) were split off in 2002 and 2009 respectively from Kupang Regency.  The island accounts for 35.5% of the provincial population.

Question: How many regencies was West Timor split into?
four