local p = {}

function p.main(frame)
	local content = frame.args[1] or ''
	local i = {}
	for counter in string.gmatch(content, '%$%d+') do
		i.counter = (i.counter or 0) + 1
		content = string.gsub(content, counter, i.counter, 1)
	end
	return content
end

return p