◦୦◦◯◦୦◦ ⠀ ◯୦◯◦◯୦◯ ⠀ ◦୦◦◯◦୦◦ ⠀ ◦୦◯୦◦⠀◯୦◦୦◯⠀◦୦◯୦◦ ⠀ ◦୦◦◯◦୦◦ ⠀ ◯୦◯◦◯୦◯ ⠀ ◦୦◦◯◦୦◦

viewof codec = { const ꖅ=(O,ꖅꖅ=O=>O[0]?[...ꖅꖅ(O.slice(1)),O[0],...ꖅꖅ(O.slice(1))]:[])=>ꖅꖅ([...O]).join`` const ↈ=(O,ↈↈ=O=>O[0]?O[(O.length-1)/2]+ↈↈ(O.slice(0,(O.length-1)/2)):"")=>ↈↈ([...O]) const ƎE=O=>[...O].reverse().join``+[...O].slice(1).join`` const ↀ=O=>O.slice(-(O.length+1)/2) const ui = html` ${row("", [["◦୦◦◯◦୦◦", ꖅ], ["◯୦◯◦◯୦◯", ↈ], ["◦୦◦◯◦୦◦", ꖅ]])} ${row("", [["◦୦◯୦◦", ƎE], ["◯୦◦୦◯",…

See it on observablehq.com ↗