The other 12 of the best was administered to a friend of mine when he was about 13 after he burnt down the science lab at his school!. I understand he was given six of the best then made to wait outside the study for 15 minutes before being given a second six – which was not completed as he fainted. I found that description utterly barbaric and still do, in its deliberate cruelty.
I forgot yesterday. Our “friend” Derek Slade, the mad Sussex Slipperer, also featured in a documentary about his exploits at St Georges (I think) a boarding school mainly used by army brats where a page from the punishment book had the entry “6+6 cane each” plus lots of other lesser punishments with cane and slipper.