| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] several years | 731 |
|
| 2 | [prep] several years | 731 |
|
| 3 | for several years | 527 |
|
| 4 | for several years | 527 |
|
| 5 | [verb] several years | 169 |
|
| 6 | [noun] several years | 72 |
|
| 7 | [vb pp] several years | 62 |
|
| 8 | of several years | 52 |
|
| 9 | of several years | 52 |
|
| 10 | after several years | 51 |
|
| 11 | after several years | 51 |
|
| 12 | over several years | 45 |
|
| 13 | over several years | 45 |
|
| 14 | [noun sg] several years | 42 |
|
| 15 | [vb past] several years | 39 |
|
| 16 | [adv] several years | 37 |
|
| 17 | take several years | 36 |
|
| 18 | spend several years | 28 |
|
| 19 | [be] several years | 24 |
|
| 20 | be several years | 24 |
|
| 21 | [vb infin] several years | 21 |
|
| 22 | [v-ing] several years | 21 |
|
| 23 | [adv prt] several years | 20 |
|
| 24 | [adj] several years | 18 |
|
| 25 | [adv] several years | 16 |
|
| 26 | [noun prp] several years | 15 |
|
| 27 | [noun pl] several years | 14 |
|
| 28 | take several years | 13 |
|
| 29 | by several years | 12 |
|
| 30 | [was/were] several years | 12 |
|
