最佳答案:b-an→ban,b-i-an→bian;p-an→pan,p-i-an→pian;m-an→man,m-i-an→mian;f-an→fan;d-an→dan;d-i-an→dian,d-u-an→
b-an→ban,b-i-an→bian;p-an→pan,p-i-an→pian;
m-an→man,m-i-an→mian;f-an→fan;d-an→dan;
d-i-an→dian,d-u-an→duan;t-an→tan,t-i-an→tian,
t-u-an→tuan;n-an→nan,n-i-an→nian,n-u-an→nuan;
l-an→lan,l-i-an→lian,l-u-an→luan;g-an→gan,
g-u-an→guan;k-an→kan,k-u-an→kuan;h-an→han,
h-u-an→huan;j-i-an→jian,j-ü-an→juan;q-i-an→qian,
q-ü-an→quan;x-i-an→xian,x-ü-an→xuan;zh-an→zhan;
zh-u-an→zhuan;ch-an→chan,ch-u-an→chuan;
sh-an→shan,sh-u-an→shuan;r-an→ran,r-u-an→ruan;
z-an→zan,z-u-an→zuan;c-an→can,c-u-an→cuan;
s-an→san,s-u-an→suan;y-an→yan,yuan;w-an→wan。