| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [been] [verb] a [adj] | 340 |
|
| 2 | has [been] [v-ing] a [adj] | 91 |
|
| 3 | have [been] undergoing a [adj] | 7 |
|
| 4 | has [been] undergoing [art] [adj] | 7 |
|
| 5 | [verb] [been] undergoing a [adj] | 7 |
|
| 6 | has [been] undergo a [adj] | 5 |
|
| 7 | [vb -s] [been] undergoing a [adj] | 5 |
|
| 8 | has [be] undergoing a [adj] | 5 |
|
