Write a Thrax grammar which replaces all occurrences of Polish
inflected forms of the word "Legia" ("Legia", "Legią", "Legię",
"Legii") into the corresponding forms of the word "Lech" ("Lech",
"Lechem", "Lecha", "Lecha", respectively).

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DEADLINE: 2020-01-30 23:00