hhh

while true do
  if rs.getInput("back", false) then
   rs.setOuput("back", true)
  end
  if rs.getInput("right", true) then
   rs.setOuput("front", true)
   rs.setOuput("left", false)
   end

   if rs.getInput("right", false) then
    rs.getOuput("left", true)
	end
end