ansys直接建立有限元模型问题

ansys直接建立有限元模型问题
finish
/clear
/prep7
n,1,0,0,0
n,2,0,0.5,0
n,3,0,1,0
n,4,0.5,1,0
n,5,1,1,0
n,6,1,0.5,0
n,7,1,0,0
n,8,0.5,0,0
n,9,0,0,0.5
n,10,0,1,0.5
n,11,1,1,0.5
n,12,1,0,0.5
n,13,0,0,1
n,14,0,0.5,1
n,15,0,1,1
n,16,0.5,1,1
n,17,1,1,1
n,18,1,0.5,1
n,19,1,0,1
n,20,0.5,0,1
n,21,0,0,1.5
n,22,0,1,1.5
n,23,1,1,1.5
n,24,1,0,1.5
n,25,0,0,2
n,26,0,0.5,2
n,27,0,1,2
n,28,0.5,1,2
n,29,1,1,2
n,30,1,0.5,2
n,31,1,0,2
n,32,0.5,0,2
et,1,solid122
mp,perx,1,1
type,1
mat,1
e,7,5,3,1,19,17,15,13,6,4,2,8,18,16,14,20,12,11,10,9
e,19,17,15,13,31,29,27,25,18,16,14,20,30,28,26,32,24,23,22,21

e命令生成的是20节点solid122单元,生成后list--elements 为什么只有前8个节点

LIST ALL SELECTED ELEMENTS. (LIST NODES)

ELEM MAT TYP REL ESY SEC NODES

1 1 1 1 0 1 7 5 3 1 19 17 15 13
0 0 0 0 0 0 0 0
0 0 0 0
2 1 1 1 0 1 19 17 15 13 31 29 27 25
0 0 0 0 0 0 0 0
0 0 0 0