| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but [prep] a [noun] [prep] | 578 |
|
| 2 | but [prep] a [noun sg] [prep] | 556 |
|
| 3 | [conj] [prep] a period [prep] | 57 |
|
| 4 | [coord] [prep] a period [prep] | 35 |
|
| 5 | but [prep] [art] period [prep] | 12 |
|
| 6 | but [prep] [art] period [prep] | 12 |
|
| 7 | but [prep] a period [prep] | 6 |
|
| 8 | but [prep] a period [prep] | 6 |
|
| 9 | but [prep] a period [prep] | 6 |
|
