模态分析新手，求助

/BATCH
/FINI,SHUZHILIANG
/TITLE,THE OPTIMAL DESIGN OF A SHUZHILIAJG
/PREP7
ET,1,BEAM189
MP,EX,1,,3.2E10
K,1,0,0,0
K,2,5,0,0
K,3,2.5,0.2,0
LSTR,1,2
SECTYPE,1,BEAM,RECT,
SECDATA,0.25,0.2,0,0
SLIST,1,1,,
DENSITY=2500
LSEL,S,,,1,1,1
LATT,1,,1,0,3,,1
ESIZE,0.5,0
LMESH,1
D,1,UY
D,1,UZ
D,1,UX
D,2,UY
D,2,UZ
SAVE
FINISH
/SOLU
ANTYPE,2
MODOPT,SUBSP,4
MXPAND,4
SOLVE
FINISH
/POST1
*GET,F1,MODE,1,FREQ
*GET,F2,MODE,2,FREQ
*GET,F3,MODE,3,FREQ
*GET,F4,MODE,4,FREQ
SET,LIST
SET,1
PLDISP
MLIST,ALL
*STATUS
FINISH
这是我写的命令流，有错误，希望高人指点一下，万分感激