mapper.lua

local vertexStart = {"RRLR", "RR", "", "L", "LRL", "LRLRL"}
local vertexRows = {6, 8, 11, 10, 8, 6}

local allVerticies = {}

for start = 1, #vertexStart do
    local startTurn = "L"
    if start == 3 then
        startTurn = "S"
    elseif start > 2 then
        startTurn = "R"
    end

    local startStr = vertexStart[start]
    table.insert(allVerticies, startStr)

    if startTurn ~= "S" then
        startStr = startStr .. startTurn
        table.insert(allVerticies, startStr)
        startStr = startStr .. startTurn
        table.insert(allVerticies, startStr)
    else
        startStr = startStr .. "R"
        table.insert(allVerticies, startStr)
    end

    for r = 1, (vertexRows[start] - 2) do
        if startStr:sub(-1, -1) == "L" then
            startStr = startStr .. "R"
            table.insert(allVerticies, startStr)
        else
            startStr = startStr .. "L"
            table.insert(allVerticies, startStr)
        end
    end

end

print(table.concat(allVerticies, "\", \""))

For what this is needed?