<Tr> <Td> Assistant Secretary or Director </Td> <Td> Grade 5 </Td> </Tr> <Tr> <Th> Senior Managers </Th> <Th> </Th> <Td> Senior Principal (xxx) or Deputy Director </Td> <Td_colspan="4"> Grade 6 </Td> <Td> A5 </Td> <Td> Captain (> 6 years in rank) </Td> <Td> N / A </Td> <Td> N / A </Td> </Tr> <Tr> <Td> Principal (xxx) or Assistant Director </Td> <Td_colspan="4"> Grade 7 </Td> <Td> Captain (OF - 5) </Td> <Td> Colonel (OF - 5) </Td> <Td> Group Captain (OF - 5) </Td> </Tr> <Tr> <Td_colspan="3"> Assistant Principal (xxx) or Deputy Assistant Director </Td> <Td_colspan="2"> Senior Executive Officer (SEO) </Td> <Td> A4 </Td> <Td> Commander (OF - 4) </Td> <Td> Lieutenant Colonel (OF - 4) </Td> <Td> Wing Commander (OF - 4) </Td> </Tr>

Describe the bureaucratic structure of the two major parties