<Tr> <Th> Locative </Th> <Td> eṉṉil (also eṅkal) </Td> <Td> niṉṉil (also niṅkal) </Td> <Td> avaṉil (also avaṅkal) </Td> <Td> avaḷil (also avaḷkal) </Td> <Td> ñaṅṅaḷil </Td> <Td> nammil </Td> <Td> niṅṅaḷil </Td> <Td> avaril (also avaṟkal) </Td> </Tr> <Tr> <Th> Sociative </Th> <Td> eṉṉōṭu </Td> <Td> niṉṉōṭu </Td> <Td> avaṉōṭu </Td> <Td> avaḷōṭu </Td> <Td> ñaṅṅaḷōṭu </Td> <Td> nammōṭu </Td> <Td> niṅṅaḷōṭu </Td> <Td> avarōṭu </Td> </Tr> <P> The following are examples of some of the most common declension patterns . </P> <Table> <Tr> <Th> Word </Th> <Th_colspan="2"> Tree </Th> <Th_colspan="2"> Elephant </Th> <Th_colspan="2"> Human </Th> <Th_colspan="2"> Dog </Th> </Tr> <Tr> <Th> Case </Th> <Th> Singular </Th> <Th> Plural </Th> <Th> Singular </Th> <Th> Plural </Th> <Th> Singular </Th> <Th> Plural </Th> <Th> Singular </Th> <Th> Plural </Th> </Tr> <Tr> <Th> Nominative </Th> <Td> maram </Td> <Td> maraṅgaḷ </Td> <Td> āṉa </Td> <Td> āṉakaḷ </Td> <Td> maṉuṣyaṉ </Td> <Td> maṉuṣyar </Td> <Td> paṭṭi </Td> <Td> paṭṭikaḷ </Td> </Tr> <Tr> <Th> Vocative </Th> <Td> maramē </Td> <Td> maraṅgaḷē </Td> <Td> āṉē </Td> <Td> āṉakaḷē </Td> <Td> maṉuṣyā </Td> <Td> maṉuṣyarē </Td> <Td> paṭṭī </Td> <Td> paṭṭikaḷē </Td> </Tr> <Tr> <Th> Accusative </Th> <Td> maratte </Td> <Td> maraṅgaḷe </Td> <Td> āṉaye </Td> <Td> āṉakaḷe </Td> <Td> maṉuṣyaṉe </Td> <Td> maṉuṣyare </Td> <Td> paṭṭiye </Td> <Td> paṭṭikaḷe </Td> </Tr> <Tr> <Th> Genitive </Th> <Td> marathiṉṯe </Td> <Td> maraṅgaḷuṭe </Td> <Td> āṉayuṭe </Td> <Td> āṉakaḷuṭe </Td> <Td> maṉuṣyaṉṯe </Td> <Td> maṉuṣyaruṭe </Td> <Td> paṭṭiyuṭe </Td> <Td> paṭṭikaḷuṭe </Td> </Tr> <Tr> <Th> Dative </Th> <Td> marathinu </Td> <Td> maraṅgaḷkku </Td> <Td> āṉaykku </Td> <Td> āṉakaḷkku </Td> <Td> maṉuṣyaṉu </Td> <Td> maṉuṣyaṟkku </Td> <Td> paṭṭiykku </Td> <Td> paṭṭikaḷkku </Td> </Tr> <Tr> <Th> Instrumental </Th> <Td> marathāl </Td> <Td> maraṅgaḷāl </Td> <Td> āaṉayāl </Td> <Td> āaṉakaḷāl </Td> <Td> maṉuṣyaṉāl </Td> <Td> maṉuṣyarāl </Td> <Td> paṭṭiyāl </Td> <Td> paṭṭikaḷāl </Td> </Tr> <Tr> <Th> Locative </Th> <Td> marathil </Td> <Td> maraṅgaḷil </Td> <Td> āṉayil </Td> <Td> āṉakaḷil </Td> <Td> maṉuṣyaṉil </Td> <Td> maṉuṣyaril </Td> <Td> paṭṭiyil </Td> <Td> paṭṭikaḷil </Td> </Tr> <Tr> <Th> Sociative </Th> <Td> marathōṭu </Td> <Td> maraṅgaḷōṭu </Td> <Td> āṉayōṭu </Td> <Td> āṉakaḷōṭu </Td> <Td> maṉuṣyaṉōṭu </Td> <Td> maṉuṣyarōṭu </Td> <Td> paṭṭiyōṭu </Td> <Td> paṭṭikaḷōṭu </Td> </Tr> </Table>

Who were the rulers who introduced malayalam language and script in their inscription