Node script that finds words you could use in IPv6 addresses.

words_for_ipv6.js

var fs = require("fs")
var file = fs.readFileSync("words_alpha.txt", { encoding: "utf-8" }).split("\r\n");
var out = [];
var allowedCharacters = ['a', 'b', 'c', 'd', 'e', 'f', 't', 's', 'g', 'i', 'o']

for (let line of file) {
    var o = "";
    for (var c of line) {
        if (allowedCharacters.includes(c.toLowerCase())) {
            if (c.match(/[tsgio]/g))
                c = c.replace("t", "7").replace("s", "5").replace("g", "6").replace("i", "1").replace("o", "0")
            o = o + c;
        }
    }
    if (line.length == o.length) {
        //console.log(line)
        //console.log(`> ${o}`)
        //console.log(line.length, o.length)
        
        out.push(`${line} | ${o}`);
    }
}
console.log(out.join("\n"));

If you want to know why I did this, see https://chaos.social/@Kurty00/108859858168556085.