$1:3:5:6$

$\to -\langle V{P}^{4}V\rangle {\left(\Delta E_2\right)}^2\Delta E_1$

$\to S_2^2{S}_1^2=\left(1\right)$

$1:4:5:6$

$\to -\langle V{P}^{4}V\rangle \Delta E_3{\left(\Delta E_1\right)}^2$

$\to S_3{S}_1^2=\left(2\right)$

$1:2:3:4:6$

$\to \langle V{P}^{5}V\rangle {\left(\Delta E_1\right)}^3\Delta E_2$

$\to S_1^3{S}_2=\left(1\right)$

$1:2:3:5:6$

$\to \langle V{P}^{5}V\rangle {\left(\Delta E_1\right)}^2\Delta E_2\Delta E_1$

$\to S_1^3{S}_2=\left(1\right)$

$1:2:4:5:6$

$\to \langle V{P}^{5}V\rangle \Delta E_1\Delta E_2{\left(\Delta E_1\right)}^2$

$\to S_1^3{S}_2=\left(1\right)$

$1:3:4:5:6$

$\to \langle V{P}^{5}V\rangle \Delta E_2{\left(\Delta E_1\right)}^3$

$\to S_1^3{S}_2=\left(1\right)$

$1:2:3:4:5:6$

$\to -\langle V{P}^{6}V\rangle {\left(\Delta E_1\right)}^5$

$\to S_1^5=\left(1\right)$