| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] [v-ing] a | 862 |
|
| 2 | [v-ing] a [num] | 774 |
|
| 3 | [been] [v-ing] [num] | 113 |
|
| 4 | [been] a [num] | 80 |
|
