Nice Licence Plates

Problem Number: 
12 602
Type of Problem: 
Problem Category: 
Input: 
Critical Input
0
0
Critical Input: 
9 BBZ-0627 BBZ-0626 BBZ-0827 BBZ-0828 KHI-6950 KHI-7051 KHI-7050 KHI-6850 KHI-6849
Random Input: 
Problem Id: 
12602