function pangrams(s: string): string {
    const alphabet = "abcdefghijklmnopqrstuvwxyz";
    const ALPH_LENGTH = 26;
    
    for (let i = 0; i < ALPH_LENGTH; i++) {
        if (!s.toLocaleLowerCase().includes(alphabet[i])) 
            return "not pangram";
    }
    
    return "pangram";

}