Recently, I was trying to solve one of Phos4s's puzzles and thought I had it solved, but apparently I was nowhere close. What I did get was the inspiration for a puzzle of my own. Enjoy!
GC5FDTN
GC70AV3
GC1JVXX
GC6F56W
GC5FDVN
GC4T27R
GC40YV1
GC6KEBG
GC7MR40
GC71RXP
You can validate your puzzle solution with certitude.