Genetic Code: Four Diversity Types of Protein Amino Acids

This is Version 2 of my article, published in arXiv 20.VII.2011. The new parts are these: sections 3.1.1 and 4.3.4; Figure 3 as just new; also new legend to Table 2; in Appendix A two new figures – Figure A2 and A3. With the adding a new footnote (18), now is a new order of footnote from 18 to 22. That is all.