A ancient chest opens only with a \(3\)-letter code. The code is formed by taking the unit digits of the 4\(^{\text{th}}\), 8\(^{\text{th}}\) and 11\(^{\text{th}}\) terms of the Virahāṅka sequence. After finding the digits, allocate letters to them using \(A = 1\), \(B = 2\), ..., \(Z = 26\). What is the final code?
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