1-2
1-02
1-20
10-20
fred
jane
pic01
pic2
pic02
pic02a
pic3
pic4
pic 4 else
pic 5
pic05
pic 5 
pic 5 something
pic 6
pic   7
pic100
pic100a
pic120
pic121
pic02000
tom
x2-g8
x2-y7
x2-y08
x8-y8