| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | because i 've been [v-ing] | 23 |
|
| 2 | because i 've be [v-ing] | 23 |
|
| 3 | because i 've [be] [v-ing] | 23 |
|
| 4 | because i 've [been] [v-ing] | 23 |
|
