declension

local p = {}  -- Input: absolutive indefinite form -- Output: absolutive singular form -- Rules: -a > -a; -r > -rra; plural > nothing; else +a function p.absolutive_singular(word) if type(word) == "table" then word = word.args[1] end if word == nil or word == '' then return end  local suffix = '' if string.sub(word, -1) == 'r' then suffix = 'ra' elseif string.sub(word, -1) == 'k' then suffix = '' elseif string.sub(word, -1) ~= 'a' then suffix = 'a' end  return word .. suffix end  -- Input: absolutive indefinite form -- Output: absolutive plural form -- Rules: -a > -ak; -r > -rrak; else +ak function p.absolutive_plural(word) if type(word) == "table" then word = word.args[1] end if word == nil or word == '' then return end  local suffix = 'k' if string.sub(word, -1) == 'r' then suffix = 'rak' elseif string.sub(word, -1) ~= 'a' then suffix = 'ak' end  return word .. suffix end  -- Input: absolutive indefinite form -- Output: ergative indefinite form -- Rules: vowels > +k; -r > -rrek; else +ek function p.ergative(word) if type(word) == "table" then word = word.args[1] end if word == nil or word == '' then return end  local suffix = 'ek' local ending = string.sub(word, -1)  if ending == 'r' then suffix = 'rek' elseif string.find(ending, "[aeiouy]") then suffix = 'k' end  return word .. suffix end  -- Input: absolutive indefinite form -- Output: sociative adjectival form -- Rules: vowels > +ren; -r > -rren; else +en function p.zerekiko(word) if type(word) == "table" then word = word.args[1] end if word == nil or word == '' then return end  local suffix = 'ekiko' local ending = string.sub(word, -1)  if ending == 'r' then suffix = 'rekiko' elseif string.find(ending, "[aeiouy]") then suffix = 'rekiko' end  return word .. suffix end  -- Input: absolutive indefinite form -- Output: genitive indefinite form -- Rules: vowels > +ren; -r > -rren; else +en function p.genitive(word) if type(word) == "table" then word = word.args[1] end if word == nil or word == '' then return end  local suffix = 'en' local ending = string.sub(word, -1)  if ending == 'r' then suffix = 'ren' elseif string.find(ending, "[aeiouy]") then suffix = 'ren' end  return word .. suffix end  -- Input: absolutive indefinite form -- Output: locative indefinite form -- Rules: vowels > +ko;  else +eko function p.locative(word) if type(word) == "table" then word = word.args[1] end if word == nil or word == '' then return end  local suffix = 'eko' local ending = string.sub(word, -1)  if ending == 'r' then suffix = 'ko' elseif string.find(ending, "[aeiouy]") then suffix = 'ko' end  return word .. suffix end  return p