def encode(char, str):
    clear = "abcdefghijklmnopqrstuvwxyz"
    cryptic = clear[clear.index(char):] + clear[:clear.index(char)]

    crystr = ""

    str = str.lower()
    
    for i in str:
        if i not in clear:
            new = i
        else:
            new = cryptic[clear.index(i)]

        crystr = crystr + new

    return crystr

def decode(char, str):
    clear = "abcdefghijklmnopqrstuvwxyz"
    cryptic = clear[clear.index(char):] + clear[:clear.index(char)]

    enstr = ""

    str = str.lower()

    for i in str:
        if i not in cryptic:
            new = i
        else:
            new = clear[cryptic.index(i)]

        enstr = enstr + new

    return enstr