| Length of the 3’-section | 30 to 31 | 32 to 33 | 34 to 36 | 37 to 38 | 39 to 41 | 42 to 43 | 44 to 46 | 47 to 48 | 49 to 51 |
| Number of As | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
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