You keep forgetting how to do control flow in shell scripts.
#!/bin/bash
for VAR in ITEMA ITEMB ITEMC ITEMD; do
# do something with $VAR
done
for VAR in {1..5}; do
# do something with $VAR
done
while [ condition ]; do
# do something
done
if [ "$str1" == "$str2" ]; then
# do something
elif [ other_condition ]; then
# do another thing
else
# do something else
fi