	contraction	energy term
1	no contraction	$〈 V P V P V P V P V P V P V 〉$
2	$1:2$	$- 〈 V P^{2} V P V P V P V P V 〉 Δ E_{1}$
3	$1:3$	$- 〈 V P^{2} V P V P V P V 〉 Δ E_{2}$
4	$1:2:3$	$〈 V P^{3} V P V P V P V 〉 {(Δ E_{1})}^{2}$
5	$2:3$	$- 〈 V P V P^{2} V P V P V P V 〉 Δ E_{1}$
6	$1:4$	$- 〈 V P^{2} V P V P V 〉 Δ E_{3}$
7	$1:4 \cap 2:3$	$- 〈 V P^{2} V P V P V 〉 Δ E_{3}$
8	$1:2:4$	$〈 V P^{3} V P V P V 〉 Δ E_{1} Δ E_{2}$
9	$1:3:4$	$〈 V P^{3} V P V P V 〉 Δ E_{2} Δ E_{1}$
10	$1:2:3:4$	$- 〈 V P^{4} V P V P V 〉 {(Δ E_{1})}^{3}$
11	$2:4$	$- 〈 V P V P^{2} V P V P V 〉 Δ E_{2}$
12	$2:3:4$	$〈 V P V P^{3} V P V P V 〉 {(Δ E_{1})}^{2}$
13	$3:4$	$- 〈 V P V P V P^{2} V P V P V 〉 Δ E_{1}$
14	$1:2 \cap 3:4$	$〈 V P^{2} V P^{2} V P V P V 〉 {(Δ E_{1})}^{2}$
15	$1:5$	$- 〈 V P^{2} V P V V P V P V P V 〉$
16	$1:2:5$	$〈 V P^{3} V P V 〉 Δ E_{1} Δ E_{3}$
17	$1:2:5 \cap 3:4$	$〈 V P^{3} V P V 〉 Δ E_{1} Δ E_{3}$
18	$1:3:5$	$〈 V P^{3} V P V 〉 {(Δ E_{2})}^{2}$
19	$1:4:5$	$〈 V P^{3} V P V 〉 Δ E_{3} Δ E_{1}$
20	$1:4:5 \cap 2:3$	$〈 V P^{3} V P V 〉 Δ E_{3} Δ E_{1}$
21	$1:2:3:5$	$- 〈 V P^{4} V P V 〉 {(Δ E_{1})}^{2} Δ E_{2}$
22	$1:2:4:5$	$- 〈 V P^{4} V P V 〉 Δ E_{1} Δ E_{2} Δ E_{1}$
23	$1:3:4:5$	$- 〈 V P^{4} V P V 〉 Δ E_{2} {(Δ E_{1})}^{2}$
24	$1:2:3:4:5$	$〈 V P^{5} V P V 〉 {(Δ E_{1})}^{4}$
25	$1:5 \cap 2:3$	$〈 V P^{2} V P V 〉 〈 V P^{2} V P V 〉 Δ E_{1}$
26	$1:5 \cap 2:4$	$〈 V P^{2} V P V 〉 〈 V P^{2} V 〉 Δ E_{2}$
27	$1:5 \cap 2:3:4$	$〈 V P^{2} V P V 〉 〈 V P^{3} V 〉 {(Δ E_{1})}^{2}$
28	$1:5 \cap 3:4$	$〈 V P^{2} V P V 〉 〈 V P V P^{2} V 〉 Δ E_{1}$
29	$2:5$	$- 〈 V P V P^{2} V P V 〉 Δ E_{3}$
30	$2:5 \cap 3:4$	$- 〈 V P V P^{2} V P V 〉 Δ E_{3}$
31	$2:3:5$	$〈 V P V P^{3} V P V 〉 Δ E_{1} Δ E_{2}$
32	$2:3:4:5$	$- 〈 V P V P^{4} V P V 〉 {(Δ E_{1})}^{3}$
33	$2:4:5$	$〈 V P V P^{3} V P V 〉 Δ E_{2} Δ E_{1}$