Legend from the mentioned work: "… on the left there are AAs (81 atoms) from the left side of Figure (class II, with smaller molecules within the pairs); and on the right there are AAs (123 atoms) from the right side of Figure (class I, with larger molecules within the pairs). At the same time very up there are AAs from primary superclass (81 atoms), just aliphatic and nonpolar (A, V, L, I) and "a little" polar (G, P, K, R) (hydrogen and nitrogen are less polar then oxygen!); in the other hand, except aromatic and sulfur AAs, down are AAs from secondary superclass (the row with 123 atoms), also aliphatic, but 'full' polar." , p. 80). Two inner rows vs two outer ones. There is also Table for the total number of atoms in the side chains of amino acids, as well as Table for the number of hydrogen atoms. To the left of the shaded column are amino acids of the second class, handled by the second class of aaRS. On the right are AAs of the first class. The first two rows (above) make up the amino acids of the primary superclass of CIPS (Table on the left).