| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [been] [v-ing] for several | 24 |
|
| 2 | have [been] [v-ing] for several | 24 |
|
| 3 | [vb past] [been] [v-ing] for several | 11 |
|
| 4 | had [been] [v-ing] for several | 10 |
|
| 5 | [vb base] [been] [v-ing] for several | 7 |
|
| 6 | [vb -s] [been] [v-ing] for several | 6 |
|
| 7 | has [been] [v-ing] for several | 6 |
|
| 8 | [been] [v-ing] [adv] for several | 10 |
|
| 9 | [been] [v-ing] [adv] for several | 8 |
|
| 10 | [been] [v-ing] for several [noun] | 26 |
|
| 11 | [been] [v-ing] for several [noun pl] | 26 |
|
| 12 | [been] [v-ing] for several years | 14 |
|
| 13 | [been] [v-ing] for several year | 14 |
|
