fix bug: set alphabet
fix bug: set alphabet


Former-commit-id: d1fec189ea3141f8f499e645559ec6243d47be08 [formerly a511059eedead5894dc62da497e6b8a727397426]
Former-commit-id: e283e56cd6e160a7d56d3ba7046f2f35d016bc80
simomarsili/elss