# Reverse Complement


def rc(read):
    seq = read[1]
    c = ""  # this will be the reverse complement of the input seq
    r = seq[::-1]  # string is reversed here
    for b in r:
        if b == "A":
            c += "T"
        elif b == "T":
            c += "A"
        elif b == "C":
            c += "G"
        elif b == "G":
            c += "C"
    print(seq)
    print(r)
    print(c)
    return c


rc("ATCGCCCCCC")