51. Replace the 26 English letters with numbers 0 to 25, according to the following correspondence:
\begin{tabular}{|c|c|c|c|c|c|c|c|c|c|c|c|c|}
\hline $\mathrm{A}$ & $\mathrm{B}$ & $\mathrm{C}$ & $\mathrm{D}$ & $\mathrm{E}$ & $\mathrm{F}$ & $\mathrm{G}$ & $\mathrm{H}$ & $\mathrm{I}$ & $\mathrm{J}$ & $\mathrm{K}$ & $\mathrm{L}$ & $\mathrm{M}$ \\
\hline 0 & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 & 10 & 11 & 12 \\
\hline $\mathrm{N}$ & 0 & $\mathrm{P}$ & $\mathrm{Q}$ & $\mathrm{R}$ & $\mathrm{S}$ & $\mathrm{T}$ & $\mathrm{U}$ & $\mathrm{V}$ & $\mathrm{W}$ & $\mathrm{X}$ & $\mathrm{Y}$ & $\mathrm{Z}$ \\
\hline 13 & 14 & 15 & 16 & 17 & 18 & 19 & 20 & 21 & 22 & 23 & 24 & 25 \\
\hline
\end{tabular}

Replace the letters in the pinyin “ $x_{1} x_{2} x_{3} x_{4} x_{5}$ ” with the corresponding numbers from the table above, then $x_{1}+x_{2}, x_{1}+x_{4}, x_{3}$, $x_{2}+x_{5}, x_{3}+x_{5}$ modulo 26 are $25,15,20,11,24$ respectively. Find the Chinese pinyin $x_{1} x_{2} x_{3} x_{4} x_{3} x_{5}$.
Reference answer: SHUXUE