Difficulties have included the great diversity of the languages, the lack of inflexion in many of them, and the effects of language contact.
In addition, many of the smaller languages are spoken in mountainous areas that are difficult to access, and are often also sensitive border zones.
Over the years, we have forged a reputation for innovation and originality in such areas as quality service, tenant relations, management training, environmental protection and event planning.
However, the reconstruction of the family is much less developed than for families such as Indo-European or Austroasiatic.The Sino-Tibetan languages with the most native speakers are the varieties of Chinese (1.3 billion speakers, the most of any language on Earth if counted as a single language), Burmese (33 million), and the Tibetic languages (8 million); but many Sino-Tibetan languages are spoken by small communities in remote mountain areas and as such are poorly documented.Several low-level groupings are well established, but the higher-level structure of the family remains unclear.Isa ring piloto si Cimatu ng helicopter at ng fixed-wing aircraft at na-train sa US Army Command and Staff College sa Fort Leavenworth, Kansas, USA.Naging recipient din ng Cavalier Award mula sa PMA Alumni Association at isang Hall of Famer mula sa United States Command and General Staff college. na si Bayani Flores ay dating military at commercial helicopter pilot ay tiyuhin ni Cimatu.