01. Cognate words

function solve(input) {
    var words = input[0].split(/\W/).filter(Boolean);
    var foundwords = "";
    var found = false;
    for (var first = 0; first < words.length; first++) {
        for (var second = 0; second < words.length; second++) {
            for (var third = 0; third < words.length; third++) {
                if (first != second && first != third && second != first && second != third && third != first && third != second) {
                    if (words[first] + words[second] == words[third]) {
                        if (foundwords.indexOf(words[first] + "|" + words[second] + "=" + words[third]) == -1) {
                            foundwords += words[first] + "|" + words[second] + "=" + words[third] + "\n";
                            found = true;
                        }
                    }
                }
            }
        }
    }
    if (!found) {
        return "No";
    } else {
        return foundwords
    }
}