<Table> <Tr> <Th_colspan="2"> No . </Th> <Th> Portrait </Th> <Th> Name (Birth--Death) </Th> <Th_colspan="2"> Term of Office </Th> <Th> Political Party </Th> <Th> King of Kingdom of Nepal (Reign) </Th> </Tr> <Tr> <Th> Took Office </Th> <Th> Left Office </Th> </Tr> <Tr> <Th> </Th> <Th> 18 </Th> <Td> </Td> <Td> Matrika Prasad Koirala (1912--1997) 1st time </Td> <Td> 16 November 1951 </Td> <Td> 14 August 1952 </Td> <Td> Nepali Congress </Td> <Th> Tribhuvan Bir Bikram Shah (11 December 1911--13 March 1955) </Th> </Tr> <Tr> <Th> </Th> <Th>--</Th> <Td> </Td> <Td> Direct rule by King Tribhuvan Bir Bikram Shah (1906--1955) </Td> <Td> 14 August 1952 </Td> <Td> 15 June 1953 </Td> <Td>--</Td> </Tr> <Tr> <Th> </Th> <Th> (18) </Th> <Td> </Td> <Td> Matrika Prasad Koirala (1912--1997) 2nd time </Td> <Td> 15 June 1953 </Td> <Td> 14 April 1955 </Td> <Td> Rastriya Praja Party </Td> </Tr> <Tr> <Th> </Th> <Th>--</Th> <Td> </Td> <Td> Direct rule by King Mahendra Bir Bikram Shah (1920--1972) </Td> <Td> 14 April 1955 </Td> <Td> 27 January 1956 </Td> <Td>--</Td> <Th> Mahendra Bir Bikram Shah (14 March 1955--31 January 1972) </Th> </Tr> <Tr> <Th> </Th> <Th> 19 </Th> <Td> </Td> <Td> Tanka Prasad Acharya (1912--1992) </Td> <Td> 27 January 1956 </Td> <Td> 26 July 1957 </Td> <Td> Nepal Praja Parishad </Td> </Tr> <Tr> <Th> </Th> <Th> 20 </Th> <Td> </Td> <Td> Kunwar Inderjit Singh (1906--1982) </Td> <Td> 26 July 1957 </Td> <Td> 15 May 1958 </Td> <Td> United Democratic Party </Td> </Tr> <Tr> <Th> </Th> <Th> 21 </Th> <Td> </Td> <Td> Subarna Shamsher Rana (1910--1977) </Td> <Td> 15 May 1958 </Td> <Td> 27 May 1959 </Td> <Td> Nepali Congress </Td> </Tr> <Tr> <Th> </Th> <Th> 22 </Th> <Td> </Td> <Td> Bishweshwar Prasad Koirala (1914--1982) </Td> <Td> 27 May 1959 </Td> <Td> 26 December 1960 </Td> <Td> Nepali Congress </Td> </Tr> </Table> <Tr> <Th_colspan="2"> No . </Th> <Th> Portrait </Th> <Th> Name (Birth--Death) </Th> <Th_colspan="2"> Term of Office </Th> <Th> Political Party </Th> <Th> King of Kingdom of Nepal (Reign) </Th> </Tr> <Tr> <Th> Took Office </Th> <Th> Left Office </Th> </Tr> <Tr> <Th> </Th> <Th> 18 </Th> <Td> </Td> <Td> Matrika Prasad Koirala (1912--1997) 1st time </Td> <Td> 16 November 1951 </Td> <Td> 14 August 1952 </Td> <Td> Nepali Congress </Td> <Th> Tribhuvan Bir Bikram Shah (11 December 1911--13 March 1955) </Th> </Tr>

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