The patent explains the reasoning, though I can't say I understand all of it. This is all in the french phonology - open vowels for even, closed for odd (no id

The patent explains the reasoning, though I can't say I understand all of it. This is all in the french phonology - open vowels for even, closed for odd (no idea why) - back vowel for the second bit being unset, front for set (according to the wiki e is ə and central and mid rather than back and open but...), this kind-of matches the reasoning of the consonants positionality where the front sets the bit. - H is the first consonant because it's mostly silent - The patent justifies B, K, and D as labial, guttural, and dental. I guess physically indicating the bits set, with the low bit being the front of the mouth: labial is the low bit, guttural is the high bit, and dental being inbetween is both. You can see the same physicality in the script, where "sharp edges" point to set bits when the nibble is written in pairs of two, big endian, columnar (so each block is read top to bottom, left to right, rather that left to right top to bottom). Hence U stands for 11 00 which encodes 1010, or 0xA. c encodes 01 01 0011, 3 while ɔ encodes 10 10 1100, 0xC (somewhat ironically).