| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] had [be] [v-ing] since | 17 |
|
| 2 | [noun] [vb past] [been] [v-ing] since | 17 |
|
| 3 | [noun] [vb past] been [v-ing] since | 17 |
|
| 4 | [noun] [vb past] be [v-ing] since | 17 |
|
| 5 | [noun sg] [vb past] [be] [v-ing] since | 10 |
|
