| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] [been] [adv] for | 151 |
|
| 2 | [vb -s] [been] working [adv] | 48 |
|
| 3 | [been] working [adv] for | 25 |
|
| 4 | [vb -s] [been] working for | 23 |
|
