| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] for four [noun] | 15 |
|
| 2 | have been [verb] for four [noun pl] | 14 |
|
| 3 | have been [vb pp] for four [noun] | 9 |
|
| 4 | have been [verb] for four year | 7 |
|
| 5 | have been [verb] for four years | 7 |
|
| 6 | have been [v-ing] for four [noun] | 6 |
|
| 7 | has been [verb] for four [noun] | 5 |
|
