| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] and [noun] have been | 782 |
|
| 2 | [noun sg] [noun] have been [v-ing] | 692 |
|
| 3 | and [noun] have been [v-ing] | 217 |
|
| 4 | [noun sg] and have been [v-ing] | 59 |
|
