| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] for several [noun] | 41 |
|
| 2 | have been [verb] for several [noun pl] | 41 |
|
| 3 | have been [v-ing] for several [noun] | 24 |
|
| 4 | have been [verb] for several year | 19 |
|
| 5 | have been [verb] for several years | 19 |
|
| 6 | had been [verb] for several [noun] | 17 |
|
| 7 | have been [vb pp] for several [noun] | 17 |
|
| 8 | has been [verb] for several [noun] | 10 |
|
| 9 | have been [verb] for several [noun] | 9 |
|
| 10 | have been [verb] for several months | 6 |
|
| 11 | have been [verb] for several month | 6 |
|
| 12 | have been run for several [noun] | 6 |
|
| 13 | have been [verb] for several weeks | 5 |
|
| 14 | have been [verb] for several week | 5 |
|
| 15 | have been running for several [noun] | 5 |
|
