| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who [vb base] been [v-ing] [adv] | 34 |
|
| 2 | [Wh pn] have been [v-ing] [adv] | 25 |
|
| 3 | [Wh pn] [vb base] been [v-ing] [adv] | 21 |
|
| 4 | [Wh pn] [vb base] been [v-ing] [adv prt] | 15 |
|
| 5 | [Wh pn] 've been [v-ing] [adv] | 11 |
|
