The bottom three rows belong to the secondary superclass. Non-bold and italicized amino acids are of lower rank, less complexity; while the bold ones are of a higher rank, that is, of greater complexity. The exception is phenylalanine because as a member of the FY pair it is of lower rank. However, given the fact that PheRS attaches phenylalanine to the 2′-OH of the tRNA terminal adenosine, it is considered to be of higher rank in this constellation. [Class I and II aminoacyl-tRNA synthetases attach amino acids to the 2′-and 3′-OH of the tRNA terminal adenosine, respectively. The only exception is phenylalanyl-tRNA synthetase (PheRS), which structurally belongs to Class II but attaches phenylalanine to the 2′-OH.)] From [DOI 10.31219/osf.io/fzgjp] (Table , p. 5). Hierarchy of rows and columns taken from Figure . It can be noticed that the quantities 34 and 40 form a common sequence with the quantities 36 and 38, in Table .1. And this sequence we also find in the central area of the system-arrangement presented in Figure , that is, in the central area of PSN. Codon number relationships within Table . Quantities 28 and 35, together with quantities 21 and 42 (Survey 7) correspond to the harmonic mean of a 6-bit binary tree (MMR, 1998, Fig. ). In the final outcome, the whole system-arrangement is determined by the quantities 25 and 36, which we find as unique situations (unique states) in the Periodic system of numbers (Figure ), and also in two algebraic equations that determine both the chemical and the genetic code (MMR, 2018b, Surveys, 2a and 3a). The uniqueness of the quantities, i.e. the numbers 25 and 36, concerns the fact that there are only two adjacent numbers in the series of natural numbers (they differ by the unit of the first order) whose squares are neighbors, as they differ by the unit of the first order and the unit of the second order. This applies only in the Periodic System of Numbers (PSN) of the Decimal number system, while it does not apply to the other Periodic systems of numbers (Survey 7.2). [Note: The two aforementioned algebraic equations, changed for a first-order and/or second-order unit, are found in a mathematical program printed in Darwin's Diagram, the only illustration in his book On the Origin of Species. (Table From ): Relationships of the number of codons in a harmonic structure of GC (Table ); c. Codon number; n. Number of nucleotides in codons. There are 25 codons within the even rows, and 36 in the odd rows, which respectively correspond to the number of coding codons for the first two and the second two types of amino acid diversity (MMR, 2018b, Tab. 5 and Section 2.2); in the first three rows 32 codons, and in the last two rows 29 codons, all together as in the first and second half of the Genetic Code ). This neighborhood mirroring corresponds to the analogous neighborhood mirroring we find in the formula, both for the chemical and for the genetic code (MMR, 2018b, Eq. 2 on p. 293). In the third row, we find a pattern that corresponds to the distinction and distribution of amino acids from the aspect of essentiality, as well as from the aspect of their positions in Boolean spaces (Figure ). On the other hand, in the third and fourth rows we find quantities, which also correspond to the quantities in GC: 63 as the end point on the 6-bit binary tree (MMR, 1998, Fig. ); 81 as 61 amino acid codons plus 20 AAs.