| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | less than [adv] a [noun sg] | 7 |
|
| 2 | less than [adv] a [noun sg] | 7 |
|
| 3 | less than [adv] a month | 6 |
|
| 4 | less than once a [noun sg] | 6 |
|
