| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] for a long time | 45 |
|
| 2 | [be] [v-ing] for a long | 41 |
|
| 3 | [be] [v-ing] a long time | 38 |
|
| 4 | [be] for a long time | 32 |
|
