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This is a three step process:

Convert all occurrences of -- to something that doesn't appear in your input.
Convert all remaining occurrences of - to ..
Convert all of the characters you...

pretty much...
depending how your expected patterns will be, this may or may not be what you want, e.g. xx-zz-ww.bb-cc-dd.ee.ff might not produce what you want and might want to 'tighten up'...

Hope this helps:
awk '{print $1}' inputfile | uniq -c | awk '{print $2" "$1}'