echo
echo " x "
echo " xxx "
echo " xxxxx "
echo " xxxxxxxxx "
echo " xxxxxxxxxxx "
echo " x xxxxxxxxxxxxx x "
echo " xxxx xxxxxxxxxxxxx xxxx "
echo " xxxxxxxx xxxxxxxxxxxxx xxxxxxx "
echo " xxxxxxxxx xxxxxxxxxxx xxxxxxxx "
echo " xxxxxxxxx xxxxxxxxx xxxxxxxx "
echo " xxxxxxxxx xxxxxxx xxxxxxxx "
echo " xxxxxxxxx xxxxx xxxxxxxx "
echo " xxxxxxxxx xxx xxxxxxxxx "
echo " xxxxxxxxx x xxxxxxxxx "
echo " xxxxxxxxxxxxxxxxx "
echo " xxxxxxxxxxx "
echo " xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx "
echo " xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx "
echo " xxxxxxxxxxxxx x xxxxxxxxxxxxx "
echo " x