books the second example is ordered pairs of numbers
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# First example integers
# Examples of even and odd numbers
# Examples of prime and complex numbers
# Examples of properties of real numbers
# Various examples of complex numbers
# Examples of rational numbers
# The most famous examples of irrational numbers
# Various examples of simplifying numbers
# Examples of real numbers
# second level numerology
# 2nd level numerology 1 100
# Specific ordinal numbers
# arranged marriages
# Marriage with honors
# Ranking of teams in second place
# Topography of the first and second place
# second-order reaction
# Great concavity of second place
# Geosyncline from second place
# Reordered folds
