hierarchic
| data base
| hierarchic | |
| IT earth.sc. | gerarchico |
| data base | |
| environ. | base di dati |
| IT dat.proc. | base di dati |
| IT lab.law. tech. | banca di dati |
| |||
| gerarchico | |||
|
hierarchic : 16 phrases in 5 subjects |
| Astronomy | 6 |
| Communications | 2 |
| General | 1 |
| Information technology | 5 |
| Power lines | 2 |