| First two digits of Catalogue Number | Instrumentation |
|---|---|
| 16 | String quartets |
| 20 | Violin and violoncello |
| 21 | Violoncello and piano |
| 22 | Two violins |
| 23 | Violin and viola |
| 24 | Two violas |
| 25 | Two violoncelli |
| 30 | Two violins and violoncello |
| 31 | Two violins and viola |
| 32 | Two violins and viola or violoncello |
| 33 | Violin, viola and violoncello |
| 34 | Three violins |
| 35 & 36 | Other string trios |
| 37 | Violin, violoncello and piano |
| 38 | Violin, viola and piano |
| 40 & 44 | Quartets (other) |
| 41, 42, 43, 45 & 46 | Two violins, viola and violoncello |
| 47 | Violin, viola, violoncello and piano |
| 50 | Two violins, two violas and violoncello |
| 51 | Two violins, two violas and violoncello or doublebass |
| 52 | Two violins, viola and two violoncelli |
| 53 | Two violins, viola and doublebass or violoncello |
| 54 | Two violins, viola, violoncello or viola and violoncello or doublebass |
| 55 | Two violins, viola, violoncello or viola and violoncello |
| 56 | Two violins, viola, violoncello and violoncello or doublebass |
| 57 | Two violins, viola, violoncello and piano |
| 58 | Violin, viola, violoncello, doublebass and piano |
| 59 | Two violins, viola, violoncello and doublebass |
| 60 | Two violins, two violas and two violoncelli |
| 61 | Two violins, two violas and doublebass or violoncello |
| 62 | Three violins, viola and two violoncelli |
| 63 | Two violins, viola, two violoncelli and doublebass |
| 67 | Two violins, viola, violoncello, doublebass and piano |
| 68 | Two violins, viola, violoncello, doublebass or violoncello and piano |
| 69 | Two violins, two violas, violoncello and piano |
| 80 | String Octet or double quartet |
| 81 | Four violins, two violas, violoncello and doublebass |
| 90 | String octet and doublebass |
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