const pangrams = s => {
    const string = s.toLowerCase().replace(/ /g, "");
    const charCodeArr = [...new Set([...string].map((_, i) => string.charCodeAt(i)))].sort((a, b) => a - b);
    
    for (let i = 97; i <= 122; i++) {
        if (!charCodeArr.includes(i)) return "not pangram";
    }
    return "pangram";
}