| No | Pattern | Freq | Relations |
|---|---|---|---|
| 61 | over a four-year period | 8 |
|
| 62 | over a 24-hour period | 7 |
|
| 63 | over a 24-hour period | 7 |
|
| 64 | over a considerable period | 7 |
|
| 65 | over a six-month period | 7 |
|
| 66 | over a considerable period | 7 |
|
| 67 | over a lengthy period | 7 |
|
| 68 | over a six-month period | 7 |
|
| 69 | over a lengthy period | 7 |
|
| 70 | over a six-year period | 6 |
|
| 71 | over a six-year period | 6 |
|
| 72 | over a ten-year period | 5 |
|
| 73 | over a set period | 5 |
|
| 74 | over a seven-year period | 5 |
|
| 75 | over a seven-year period | 5 |
|
| 76 | over a set period | 5 |
|
| 77 | over a sustained period | 5 |
|
| 78 | over a sustained period | 5 |
|
| 79 | over a ten-year period | 5 |
|
| 80 | over a period [prep] | 628 |
|
| 81 | over a period [prep] | 628 |
|
| 82 | over a period of | 617 |
|
| 83 | over a period of | 617 |
|
| 84 | over a period [verb] | 7 |
|
| 85 | over a period [adv] | 6 |
|
| 86 | over a period [conj] | 6 |
|
| 87 | over a period [noun] | 5 |
|
| 88 | over a period [adv] | 5 |
|
