${}_{}$ ${}_{}$

${}_{}$ ${}_{}$ ${}_{}$ ${}_{}$ ${}_{}$ ${}_{}$ ${}_{}$ ${}_{}$ ${}_{}$

${}_{}$ ${}_{}$

${}_{}$ ${}_{}$ ${}_{}$

$\underset{}{}$ ${}_{}$

$\underset{}{}{}_{}{}_{}\underset{}{}{}_{}\underset{}{}$

${}_{}\underset{}{}$ ${}_{}$ $\underset{}{}$

$\underset{}{}{}_{}\frac{\underset{}{}{}_{}}{\underset{}{}{}_{}}\frac{{}_{}}{{}_{}}$

${}_{}$ $\underset{}{}{}_{}$ $\underset{}{}{}_{}$

${}_{}$ $\underset{}{}{}_{}$

$\underset{}{}{}_{}\frac{}{}\underset{}{\overset{}{}}\underset{}{}{}_{}$

$\underset{}{}{}_{}\frac{\underset{}{}{}_{}}{\underset{}{}{}_{}}\frac{{}_{}}{{}_{}}$

${}_{}\frac{}{}{}_{}\frac{}{}$

$\underset{}{}{}_{}\frac{\underset{}{}{}_{}}{\underset{}{}{}_{}}$

${}_{}$ ${}_{}$

${}^0$ ${}^0$ ${}^0$ ${}^0$ ${}^0$ ${}^0$ ${}_{}$

${}_{}$ ${}_{}$ ${}_{}$ ${}_{}$ ${}_{}$ ${}_{}$

${}_{}$ ${}_{}$ ${}_{}$ ${}_{}$ ${}_{}$

${}_{}$ ${}_{}$ ${}_{}$ ${}_{}$ ${}_{}$ ${}_{}$

${}_{}$

${}_{}$

${}_{}$ ${}_{}$ ${}_{}$

${}_{}$

${}_{}$