| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [verb] [art] | 5460 |
|
| 2 | been [v-ing] [art] | 2357 |
|
| 3 | be preparing [art] | 142 |
|
| 4 | [be] preparing [art] | 142 |
|
| 5 | [been] preparing [art] | 9 |
|
| 6 | been prepare [art] | 9 |
|
