| become visible | 0.57 |
| create a preloading stop | 0.52 |
| occur | 0.22 |
| reduce blood flow | 0.16 |
| narrow | 0.25 |
| made | 0.68 |
| caused by reef | 0.31 |
| caused by sand bars | 0.31 |
| caused by low islands | 0.31 |
| caused by the superstru… | 0.31 |
| made near the blowpipe | 0.25 |
| used as integrated fuse | 0.25 |
| removed | 0.25 |
| shown in fig | 0.25 |