| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | as far back as [num] [adv] | 7 |
|
| 2 | as [adv] back as [num] when | 5 |
|
| 3 | as far back as [adj] when | 5 |
|
| 4 | as far back as [num] when | 5 |
|
| 5 | [adv] far back as [num] when | 5 |
|
| 6 | as far back [subord] [num] when | 5 |
|
| 7 | as far back as [num] when | 5 |
|
| 8 | [adv] far back as [num] when | 5 |
|
| 9 | as far back as [num] when | 5 |
|
| 10 | as far [adv] as [num] when | 5 |
|
| 11 | as far back [conj] [num] when | 5 |
|
| 12 | as [adv] back as [num] when | 5 |
|
| 13 | as far back as [num] when | 5 |
|
| 14 | as far back as [num] [Wh adv] | 5 |
|
