Figure 3From: Sequence-structure relations of pseudoknot RNAk -noncrossing diagrams. We display a 4-noncrossing diagram with arc-length λ ≥ 4 and stack-length τ ≥ 1 (a) and a 3-noncrossing, λ ≥ 4 and τ ≥ 3 diagram (b).Back to article page