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__    __   __   __    _____     _____     _____   
\ \\ / //  \ \\/ //  / ____||  |  ___||  / ____|| 
 \ \/ //    \ ` //  / //---`'  | ||__   / //---`' 
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   \//       |_||    \_____||  |_____||  \_____|| 
    `        `-`'     `----`   `-----`    `----`

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Text this: On the algebraic structure of quasi-cyclic codes II: Chain rings