| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | the 1991 budget | 59 |
|
| 2 | the 1991 census | 39 |
|
| 3 | the 1991 world | 36 |
|
| 4 | the 1991 season | 25 |
|
| 5 | the 1991 figure | 15 |
|
| 6 | the 1991 act | 8 |
|
| 7 | the 1991 competition | 8 |
|
| 8 | the 1991 edition | 7 |
|
| 9 | the 1991 planning | 7 |
|
| 10 | the 1991 event | 6 |
|
| 11 | the 1991 deficit | 6 |
|
| 12 | the 1991 order | 5 |
|
| 13 | the 1991 level | 5 |
|
