\(\sum\limits{77569\iiint\frac{\partial}{\partial x}\dfrac{\mathrm{d}}{\mathrm{d}x}\oint\tau\tau\tau\gamma\phi\varkappa\varkappa\psi\vartheta\begin{cases}\begin{cases}\begin{cases}\begin{cases}\begin{cases}\begin{cases}\begin{cases}\begin{cases}\begin{cases}\begin{cases}\begin{cases}\begin{cases}\placeholder{}\\ \placeholder{}\\ \placeholder{}\\ \placeholder{}\end{cases}\\ \placeholder{}\\ \placeholder{}\end{cases}\\ \placeholder{}\end{cases}\\ \placeholder{}\\ \placeholder{}\\ \placeholder{}\end{cases}\\ \placeholder{}\\ \placeholder{}\end{cases}\\ \placeholder{}\end{cases}\\ \placeholder{}\\ \placeholder{}\\ \placeholder{}\end{cases}\\ \placeholder{}\\ \placeholder{}\end{cases}\\ \placeholder{}\end{cases}\\ \placeholder{}\\ \placeholder{}\\ \placeholder{}\end{cases}\\ \placeholder{}\\ \placeholder{}\end{cases}\\ \placeholder{}\end{cases}}\)

ừ thì ai hỏi

ai hỏi

ừm

hỏiai

\(\rarr\forall\forall\left\vert\mathrm{abs}\left(\sum{\mathrm{d}x\int_0^{\infty}\!\iiint\prod_{\placeholder{}}^{\phi\phi\delta\chi\zeta\sigma\alpha\gamma\eta\eta\eta\omega\gamma\tau\rho\rho\rho\begin{cases}\placeholder{}\\ \placeholder{}\end{cases}}\,\mathrm{d}x}\right)\right\vert\)

ai hỏiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

OK

ai hoi

ko thích đấy