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The letters of the English alphabet are coded as follows:
For $$1 \leq n \leq 26$$, the $$n^{th}$$ letter is coded as the $$r^{th}$$ letter where r is the remainder obtained when 7n + 5 is divided by $$26 (1 \leq r \leq 26)$$. For decoding the reverse process is followed. Using this coding and decoding process, answer the questions.
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