system
Context: CHAPTER XXXVIII. 

MAKING them pens was a distressid tough job, and so was the saw; and Jim allowed the inscription was going to be the toughest of all. That's the one which the prisoner has to scrabble on the wall. But he had to have it; Tom said he'd GOT to; there warn't no case of a state prisoner not scrabbling his inscription to leave behind, and his coat of arms. 

"Look at Lady Jane Grey," he says; "look at Gilford Dudley; look at old Northumberland! Why, Huck, s'pose it IS considerble trouble?--what you going to do?--how you going to get around it? Jim's GOT to do his inscription and coat of arms. They all do." 

Jim says: 

"Why, Mars Tom, I hain't got no coat o' arm; I hain't got nuffn but dish yer ole shirt, en you knows I got to keep de journal on dat." 

"Oh, you don't understand, Jim; a coat of arms is very different." 

"Well," I says, "Jim's right, anyway, when he says he ain't got no coat of arms, because he hain't." 

"I reckon I knowed that," Tom says, "but you bet he'll have one before he goes out of this--because he's going out RIGHT, and there ain't going to be no flaws in his record." 

So whilst me and Jim filed away at the pens on a brickbat apiece, Jim a-making his'n out of the brass and I making mine out of the spoon, Tom set to work to think out the coat of arms. By and by he said he'd struck so many good ones he didn't hardly know which to take, but there was one which he reckoned he'd decide on. He says: 
human
what job was hard?
gpt
Making pens
human
what was harder?
gpt
The inscription
human
who got to scrabble the wall
gpt
The prisoner
human
who has to do his coat of arms?
gpt
Tom
human
does he think he has one?
gpt
No
human
do they all have one?
gpt
No
human
who is right?
gpt
Jim
human
who filed way?
gpt
Jim
human
at what?
gpt
At the pens
human
on what?
gpt
on a brickbat