| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] of [adj] years [pers pn] | 29 |
|
| 2 | period of [adj] [noun] [pers pn] | 21 |
|
| 3 | period of [adj] [noun pl] [pers pn] | 14 |
|
| 4 | period of [adj] year [pers pn] | 11 |
|
| 5 | period of [adj] years [pron] | 11 |
|
| 6 | period [prep] [adj] years [pers pn] | 10 |
|
