airavata ava bagan bhamo burma burmese language cantilever bridge chauk chindwin river dedaye dolphin geographic coordinate system great britain hinthada hong kong indian ocean indra iravati irrawaddy delta kachin state kathar kilometre limestone mlc transcription system mali river mandalay mandalay hill maubin mingun mogok mu river myitkyina myitnge river nasa nyaung-u nyaungdon pantanaw putao pyay river river dolphin sagaing sanskrit shan language union solidarity and development association waterway