This document discusses various numbers that are multiples of 3 or 4 occurring at specific points. It notes that the numbers 14, 21, 28, 35 and 42 are all multiples of either 3 or 4 appearing in the text.

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16. . . .3 4 14
. . .3 4 21
. . .3 4
28
. . .3 4 35
. . .3 4
42