| use revolving mechanica… | 0.55 |
| calculate the number of… | 0.52 |
| offer prize | 0.44 |
| call the operator bell | 0.42 |
| contribute small amount | 0.39 |
| appear in california | 0.39 |
| appear in late twentiet… | 0.39 |
| pay the player cash | 0.31 |
| pay out in simplifiedex… | 0.25 |
| set record | 0.25 |
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| ainsworth gaming | 0.46 |
| three reels | 0.68 |
| the option | 0.31 |
| progressive jackpots | 0.28 |
| several multi- lines | 0.25 |
| a computer chip | 0.25 |
| multiplier | 0.25 |
| one payline | 0.25 |
| oiled mechanism | 0.25 |
| played | 0.73 |
| used in casino | 0.68 |
| operated | 0.67 |
| loaded with question | 0.60 |
| invented in 1887 | 0.57 |
| placed on the gaming fl… | 0.56 |
| computerized | 0.52 |
| seen in historic homes | 0.51 |
| seen in structure | 0.51 |
| allowed in new jersey | 0.47 |
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