box1 a1
box2 a2

for i in text.txt; do
    while read line; do
        echo $line | read a b;
    done < text.txt;
    echo $a $b;
done

box1 a1 box2 a2

box1 a1
box2 a1

while read -r a b; do
    echo $a $b
done < text.txt