| | | Greece (1) |
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Olympiacos Piraeus, |
|
Lithuania (1) |
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Žalgiris Vilnius, |
| Netherlands (2) |
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Feyenoord, | Vitesse, |
| | |
Portugal (1) |
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Sporting Braga, |
| Romania (1) |
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Steaua Bucureşti, |
| Scotland (2) |
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Glasgow Rangers, | Hibernian, |
| |
| | Switzerland (2) |
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FC Basel, | FC Luzern, |
| Turkey (1) |
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Istanbul Başakşehir, |
|
Ukraine (1) |
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Zorya Luhansk, |
|