| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | 1973 when [art] | 11 |
|
| 2 | 1973 [adv] [art] | 11 |
|
| 3 | 1973 [Wh adv] [art] | 11 |
|
| 4 | 1973 when [art] | 11 |
|
| 5 | 1973 [adv] [art] | 11 |
|
| 6 | 1973 [adv] the | 8 |
|
| 7 | 1973 [adv] the | 8 |
|
