Spectra for individual targets, after continuum subtraction. In SDP.9, we detect HCN, HCO⁺, and HNC(4–3) lines. For SDP.11, no lines are detected. In J0209, besides HCN, HCO⁺, and HNC, we also detect the ¹³CO, C¹⁸O and CN emission. We do not detect any dense-gas tracers in SDP.130. Note the blue-shifted HCN(3–2) emission in G09v1.40, which might be coming from a molecular outflow.