(,)), square brackets ([,]), and curly brackets ({,}).(....()....)
ucagguaagcag
in demos/public/RNA_Denovo/chunk002_1lnt_.secstruct.
For GIR1 ribozyme (RNA puzzle5):
(((((..((((((.(((((((((.......))))))))).((((((((((((((......(((((...((((((((((....))))....)).))))((....)).....[[[[[...))))).((((...)))))))))))))...]]]]].((((....))))....))))).))))))..)))))
gguuggguugggaaguaucauggcuaaucaccaugaugcaaucggguugaacacuuaauuggguuaaaacggugggggacgaucccguaacauccguccuaacggcgacagacugcacggcccugccucuuagguguguucaaugaacagucguuccgaaaggaagcauccgguaucccaagacaauc
in tests/integration/tests/rna_puzzle5_P15P3P8_noP4P6_4RB_G208phosphate_ligation/GIR1_secstruct.txt