"Figure 1.- A) Braille cell and nomenclature of the dots. B) Braille alphabet: the first row has the base patterns; the second row is a replication of the first where dot 3 is added; the third row replicates the second adding dot 6 (additions highlighted in red). The letters ""ñ"" and ""w"" do not follow this pattern because they were added later. These two letters are rotations of the letters ""q"" and ""r"", respectively."
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