| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [adv] as far back | 5 |
|
| 2 | at least [adv] far back | 5 |
|
| 3 | at [adv] [adv] far back | 5 |
|
| 4 | at [adv] as far back | 5 |
|
| 5 | at [adv] [adv] far back | 5 |
|
