| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] have be [v-ing] for several | 7 |
|
| 2 | [noun] have be [v-ing] for several | 7 |
|
| 3 | [noun] have been [v-ing] for several | 7 |
|
| 4 | [noun] had be [v-ing] for several | 5 |
|
