| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [be] [vb pp] [prep] | 13395 |
|
| 2 | [be] [vb pp] back [prep] | 1745 |
|
| 3 | [conj] [be] [vb pp] back | 111 |
|
| 4 | [conj] [vb pp] back [prep] | 105 |
|
| 5 | [conj] [be] back [prep] | 59 |
|
