The sequence of letters is most often HRYIQEBUJLWSCAZOPNKXDGTFMV, though, as you can see, there are some subtle variations. In rows four through eight, there is an even more rigid pattern:

HRYIQE
BUJLWSC
AZOPNKXD
GTFMV

We have no idea why Jamie reordered the alphabet this way, and he’s not telling. (He sometimes smiles wryly, sometimes shrugs.) All we know is that, probably due to the influence of his brother’s talent for calligraphy and design, he sometimes fills in the U, D, O, and V. In many of these– though not all– the concluding V is black and emphatic, almost as if it is driving a spike into the page to end the sequence.

And then there is a jawbreaker.