Minors which are hostile to one another cannot stack together.
| Minor | Hostile to |
| *ARG | CW, BRA, CHI |
| BAL | RU, POL |
| BEL | GE |
| *BRA | ARG, CHI |
| *BUL | GRE, RUM, TUR, YUG |
| *CHI | ARG, BRA |
| CZE | HUN |
| FIN | RU |
| *GRE | BUL, TUR |
| HUN | CZE, RUM, YUG |
| IRL | CW |
| *IRQ | PER |
| MEX | US |
| *PER | CW, RU, IRQ |
| POL | GE, RU, BAL |
| RUM | RU, BUL, HUN |
| SPN | FR, RU |
| SPR | IT |
| *TUR | RU, BUL, GRE |
| YUG | IT, BUL, HUN |