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Statistics of biological structures from Table 2.
| Hairpins | Stems | 2-Branch loops | Multiloops | Bulges | |
| Size | [4,8] | [3,12] | [4, 11] | [6,17] | [1,3] |
| Number | - | - | [1,8] | [0,5] | [0,0.17]* |
| Branches | - | - | - | [3,4] | - |
Properties of the structures from Table 2; the intervals specify the minimal and maximal values observed for the respective features. These parameters were used to generate structures with biological properties. * This value denotes the ratio of bulges to base pairs in the stems.
