JavaScript Cognate Words

function solve(args) {
    words = args[0];
    words = args[0].split(/[^A-Za-z]/);
    for (var i = 0; i < words.length; i++) {
        for (var j = 0; j < words.length; j++) {
            if (words[j] === "") {
                words.splice(j, 1);
            }
        }
    }

    var used = [];
    for (var i = 0; i < words.length; i++) {
        for (var j = 0; j < words.length; j++) {
            for (var k = 0; k < words.length; k++) {
                if (words[i] + words[j] == words[k]) {
                    if (i != j) {
                        if (used.indexOf(words[i] + '|' + words[j] + '=' + words[k]) == -1) {
                            used.push(words[i] + '|' + words[j] + '=' + words[k]);
                            console.log(words[i] + '|' + words[j] + '=' + words[k]);
                        }
                    }
                }
            }
        }
    }

    if (used.length == 0) {
        console.log('No');
    }
}

console.log(solve(['ho hoho']));