| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] has been [verb] [prep] a | 54 |
|
| 2 | [coord] has [been] [vb pp] [prep] a | 50 |
|
| 3 | and has [been] [verb] [prep] a | 45 |
|
| 4 | [coord] has [been] [verb] as a | 14 |
|
| 5 | [coord] has [been] [verb] by a | 12 |
|
| 6 | [coord] has [been] [verb] in a | 8 |
|
| 7 | but has [been] [verb] [prep] a | 7 |
|
| 8 | [coord] has [been] used [prep] a | 6 |
|
| 9 | [coord] has [been] use [prep] a | 6 |
|
