how to implement a icon in dmenu file manager

im trying to figure out how to implement a icon in dmenu on the left side of each dir/file not the prompt, i know it can be done with echo sed or awk print could anyone give me a example?

#!/bin/bash

while true; do
open=$(ls -1a --group-directories-first --file-type | dmenu -fn Symbola -c -g 1 -p 'Navigate:' "$@")
if [[ -d "$open" ]]; then
cd "$open"
else
if [[ "$open" != "" ]]; then
xdg-open "$open"
fi
exit 0
fi
done