我想用bash把:

8 ㄚ阿啊

變成:

8 ㄚ
8 阿
8 啊

請問如何處理?

#!/bin/bash

str="8 ㄚ阿啊"
len=${#str}
count=2
prefix=${str:0:2}

while [ $count -lt $len ]; do
echo "${prefix}${str:$count:1}"
count=$(($count + 1))
done