| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [v-ing] for several [noun pl] | 24 |
|
| 2 | [verb] been [v-ing] for several [noun pl] | 24 |
|
| 3 | [verb] [been] [v-ing] for several years | 14 |
|
| 4 | [vb past] [been] [v-ing] for several [noun pl] | 11 |
|
| 5 | had [been] [v-ing] for several [noun pl] | 10 |
|
| 6 | [vb base] [been] [v-ing] for several [noun pl] | 7 |
|
| 7 | has [been] [v-ing] for several [noun pl] | 6 |
|
| 8 | [vb -s] [been] [v-ing] for several [noun pl] | 6 |
|
| 9 | [verb] [been] running for several [noun pl] | 5 |
|
