Λήναια

Morpho works with a static database. If you like, you can compare the output of Morpheus.

Parsed as:

Proper-name noun neuter nominative plural (cp ληναῖος)
Proper-name noun neuter vocative plural (cp ληναῖος)
✓ Proper-name noun neuter accusative plural (cp ληναῖος) of Λήναια