#!/usr/bin/env bash
sleep 1
while read -r line; do
    grep -o . <<< "$line" | while read -r a; do
        sleep 0.$((RANDOM % 3))
        #2>&1 echo -n "${a:- }" | tee /dev/tty
        echo -n "${a:- }" | tee /dev/tty
    done
    sleep 0.$((RANDOM % 7))
    echo 1>&2 -ne $"\n"
    echo
    sleep 1.0
done