| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] period of | 954 |
|
| 2 | a considerable [noun] of | 921 |
|
| 3 | a considerable [noun sg] of | 920 |
|
| 4 | a [adj] period of | 889 |
|
| 5 | a considerable period [prep] | 26 |
|
| 6 | a considerable period [prep] | 26 |
|
| 7 | a considerable period of | 23 |
|
| 8 | a considerable period of | 23 |
|
| 9 | a considerable period of | 23 |
|
| 10 | [art] considerable period of | 23 |
|
