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If you take A = 1, B = 2 to Z = 26 and add the values of the letters then SPERM = 19 + 16 + 5 + 18 + 13 = 71 and OVUM = 15 + 22 + 21 + 13 = 71. Because they equal they ahve a strong attraction towards each other. When they come together then 71 + 71 = 142 = INSEMINATION.