Lua arrays- check some rules and print in that order

function table_merge(t1, t2)
for _, v in ipairs(t2) do
    table.insert(t1, v)
end
end


 function getMaster(tbl, rules)
 local result = false
 for _, rule in ipairs(rules) do
    for i, v in ipairs(tbl) do
        result = v
        if tostring(v) ~= tostring(rule) then
            result = false
            break
        end
    end
    if result then break end
   end

  return result
  end

  function start(data, rules)
  local master_key, master_val
  local _temp, continue = {}, true

     for i, tbl in ipairs(data) do
        local master = getMaster(tbl, rules)

         if master and master ~= master_val then
           continue = true
         end

         if continue then
           if master then
            master_key = i
            master_val = master
           elseif tbl[#tbl] == master_val then
            tbl[#tbl] = nil
            table.insert(_temp[master_key], master_val)
           elseif master_key then
            continue = false
          end
        end
      _temp[i] = tbl
    end

    local result = {}
      for i, tbl in ipairs(_temp) do
       table_merge(result, tbl)
     end

    return table.concat(result, "")
 end

-- RULES
local rules = { 0, 1}

local data = {
  { 0, 0, 0, 0, 0, 0 },
  { 1, 1, 1, 1, 1, 0 },
  { 0, 0, 0, 8, 1, 0 },
  { 1, 1, 1, 1, 8, 8 },
  { 0, 0, 0, 0, 0, 0 },
}

 start(data, rules)