diff --git a/trailminator/nlu.py b/trailminator/nlu.py
index a293857..e6be84f 100644
--- a/trailminator/nlu.py
+++ b/trailminator/nlu.py
@@ -58,4 +58,10 @@ class Nlu:
         return (act, param)
 
 nlu = Nlu()
-print(nlu.tokenize('chciałbym kupić bilet do Krakow'))
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+print(nlu.tokenize('chciałbym kupić bilet do Krakow'))
+print(nlu.tokenize('chciałbym kupić bilet z Poznan'))
+print(nlu.tokenize('w piątek'))
+print(nlu.tokenize('4 bilety'))
+print(nlu.tokenize('2 bilety z ulgą studencką'))
+print(nlu.tokenize('miejsce pod oknem'))
+print(nlu.tokenize('druga klasa'))
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diff --git a/trailminator/rules.jsgf b/trailminator/rules.jsgf
index 9f7bf47..ad48d0f 100644
--- a/trailminator/rules.jsgf
+++ b/trailminator/rules.jsgf
@@ -20,14 +20,14 @@ public <podaj_liczbe> = (<liczba>+){number};
 public <passanger> = [<liczba>]{passangerCount} bilet[y | ów];
 
 //discount count
-public <discount> = [<liczba>]{discountedCount} bilet[y] z ulgą <discount_type>{discount_type};
+public <discount> = [<liczba>]{discountedCount} bilet[y] (z ulgą | ze zniżką) <discount_type>{discount_type};
 <discount_type> = studencką | seniorską | uczniowską;
 
 //seatType
-public <seatType> = [poproszę] <seat_window>{seatType} | <seat_middle>{seatType};
+public <seatType> = [poproszę] (<seat_window>{seatType} | <seat_middle>{seatType});
 <seat_window> = [miejsce] pod oknem;
 <seat_middle> = [miejsce] w środku | [miejsce] w przejściu;
 
 //wagonType
-public <wagonType> = [klasy | klasa] <class>{wagonType};
+public <wagonType> = [klasy | klasa] <class>{wagonType} [klasy | klasa];
 <class> = pierwsza | druga | 1 | 2 | I | II;
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