| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back [adv] [verb] | 262 |
|
| 2 | back [adv] [verb] | 215 |
|
| 3 | [adv] later [verb] | 112 |
|
| 4 | [adv prt] later [verb] | 13 |
|
| 5 | back later [verb] | 6 |
|
| 6 | back later [verb] | 6 |
|
