钢笔：abc
笔记本：ABCDE
文具盒：1234
aA1,aA2,aA3,aA4
aB1,aB2,aB3,aB4
aC1,aC2,aC3,aC4
aD1,aD2,aD3,aD4
aE1,aE2,aE3,aE4
bA1,bA2,bA3,bA4
bB1,bB2,bB3,bB4
bC1,bC2,bC3,bC4
bD1,bD2,bD3,bD4
bE1,bE2,bE3,bE4
cA1,cA2,cA3,cA4
cB1,cB2,cB3,cB4
cC1,cC2,cC3,cC4
cD1,cD2,cD3,cD4
cE1,cE2,cE3,cE4
