| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [v-ing] for [art] [num ord] | 9 |
|
| 2 | has [been] [v-ing] for the [num ord] | 9 |
|
| 3 | has [been] [v-ing] for [art] last | 7 |
|
