| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [verb] for two [noun pl] | 15 |
|
| 2 | has been [vb pp] for two [noun pl] | 10 |
|
| 3 | has been [verb] for two years | 9 |
|
| 4 | has been [v-ing] for two [noun pl] | 5 |
|
