Elemental abundances beyond Fe of the four stars compared with the abundance pattern of case 3, that is, the s-process component peaked at the neutron-shell closure N=50 (with the observed Zr abundance as a reference to derive the dilution factor f1, black-triangles line) and the i-process component peaked at N=82 (with La as a reference to derive f2, calculated using seeds from the s-process component). The elements with the most reliable observational results (measurements or upper limits) are highlighted with large orange circles.