| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [verb] a [adj] | 246 |
|
| 2 | has been [v-ing] a [adj] | 72 |
|
| 3 | have been undergoing a [adj] | 7 |
|
| 4 | [verb] been undergoing a [adj] | 7 |
|
| 5 | has [be] undergoing a [adj] | 5 |
|
| 6 | has [been] undergoing a [adj] | 5 |
|
| 7 | has been undergo a [adj] | 5 |
|
| 8 | has been undergoing [art] [adj] | 5 |
|
| 9 | has been undergoing a [adj] | 5 |
|
| 10 | has be undergoing a [adj] | 5 |
|
| 11 | has been undergoing [art] [adj] | 5 |
|
| 12 | has been undergoing a [adj] | 5 |
|
| 13 | [vb -s] been undergoing a [adj] | 5 |
|
