發送短信 : Cyclic DNA codes over the ring F2+uF2+vF2+uvF2+v2F2+uv2F2

  _  __    _____               _____    _    _   
 | |/ //  |  ___||   ____     |  ___|| | \  / || 
 | ' //   | ||__    |    \\   | ||__   |  \/  || 
 | . \\   | ||__    | [] ||   | ||__   | .  . || 
 |_|\_\\  |_____||  |  __//   |_____|| |_|\/|_|| 
 `-` --`  `-----`   |_|`-`    `-----`  `-`  `-`  
                    `-`