我只有9个变量。九个变量都定义完之后，又从第一个开始定义到了第六个。如何减少到九个
modified item       Var
"height of face   " "X1"
"width of face    " "X2"
"structure of face" "X3"
"height of mouth  " "X4"
"width of mouth   " "X5"
"smiling          " "X6"
"height of eyes   " "X7"
"width of eyes    " "X8"
"height of hair   " "X9"
"width of hair   "  "X1"
"style of hair   "  "X2"
"height of nose  "  "X3"
"width of nose   "  "X4"
"width of ear    "  "X5"
"height of ear   "  "X6"