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

(1)

5 1

$S_5{S}_1=14\to -\langle V{P}^{2}VPV\rangle \Delta E_4$

(5)

$\to \langle V{P}^{3}VPV\rangle \Delta E_3\Delta E_1$

(2)

$\to \langle V{P}^{3}VPV\rangle {\left(\Delta E_2\right)}^2$

(1)

$\to \langle V{P}^{3}VPV\rangle \Delta E_1\Delta E_3$

(2)

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

(1)

$\to -\langle V{P}^{4}VPV\rangle \Delta E_1\Delta E_2\Delta E_1$

(1)

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

(1)

$\to \langle V{P}^{5}VPV\rangle {\left(\Delta E_1\right)}^4$

(1)

1 5

$S_1{S}_5=14\to -\langle VPV{P}^{2}V\rangle \Delta E_4$

(5)

$\to \langle VPV{P}^{3}V\rangle \Delta E_3\Delta E_1$

(2)

$\to \langle VPV{P}^{3}V\rangle {\left(\Delta E_2\right)}^2$

(1)

$\to \langle VPV{P}^{3}V\rangle \Delta E_1\Delta E_3$

(2)

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

(1)

$\to -\langle VPV{P}^{4}V\rangle \Delta E_1\Delta E_2\Delta E_1$

(1)

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

(1)

$\to \langle VPV{P}^{5}V\rangle {\left(\Delta E_1\right)}^4$

(1)