| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | an extra [noun sg] | 1043 |
|
| 2 | an extra [n mass] | 280 |
|
| 3 | an extra day | 41 |
|
| 4 | an extra day | 41 |
|
| 5 | an extra week | 30 |
|
| 6 | an extra week | 30 |
|
| 7 | an extra dimension | 23 |
|
| 8 | an extra dimension | 23 |
|
| 9 | an extra hour | 22 |
|
| 10 | an extra hour | 22 |
|
| 11 | an extra charge | 18 |
|
| 12 | an extra charge | 18 |
|
| 13 | an extra pair | 17 |
|
| 14 | an extra year | 17 |
|
| 15 | an extra pair | 17 |
|
| 16 | an extra year | 17 |
|
| 17 | an extra premium | 14 |
|
| 18 | an extra premium | 14 |
|
| 19 | an extra night | 13 |
|
| 20 | an extra night | 13 |
|
| 21 | an extra bed | 12 |
|
| 22 | an extra bed | 12 |
|
| 23 | an extra cost | 11 |
|
| 24 | an extra bonus | 11 |
|
| 25 | an extra £1 | 11 |
|
| 26 | an extra £1 | 11 |
|
| 27 | an extra bonus | 11 |
|
| 28 | an extra cost | 11 |
|
| 29 | an extra man | 10 |
|
| 30 | an extra man | 10 |
|
