old加个字母或换个字母就换成新词
问题描述：
old加个字母或换个字母就换成新词
答
1bold
cold
fold
hold
mold
sold
told
2eld
oil
答
cold, hold
答
odd
bold
cold
sold
mold
fold
gold
hold
pold
rold
told
wold
.