Bourne shell question

[Jay A. Konigsberg]

I have a small shell script that I can't get quite right. What it
is supposed to do is list subdirectories or the message "There are
no subdirectories". The script is as follows:

ls -l | grep "^d" | pg || echo "There are no subdirectories"

When the pipe into " pg " is removed it works ok, but I would like
to keep the pg in the script.

Thanks to all who respond.
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