Difficult | Operating System
| operating system abbr. | |
| comp., MS | käyttöjärjestelmä |
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| dfclt; diffy | |||
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Difficult : 8 phrases in 6 subjects |
| Chemistry | 2 |
| Government, administration and public services | 1 |
| Labor law | 2 |
| Law | 1 |
| Life sciences | 1 |
| Transport | 1 |