| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they have been [verb] | 3286 |
|
| 2 | they have been [v-ing] | 886 |
|
| 3 | [pron] have been reading | 116 |
|
| 4 | [pers pn] have been reading | 106 |
|
| 5 | they have been read | 9 |
|
| 6 | they have been reading | 6 |
|
| 7 | they have [be] reading | 5 |
|
| 8 | they [verb] been reading | 5 |
|
| 9 | they have [been] reading | 5 |
|
| 10 | they have be reading | 5 |
|
