| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] back [prep] [adj] | 2439 |
|
| 2 | [v-ing] back [prep] [adj] | 473 |
|
| 3 | looking [adv] [prep] [adj] | 323 |
|
| 4 | look back [prep] [adj] | 149 |
|
| 5 | looking back [prep] [adj] | 58 |
|
