ciphertext = "PPKAMJELQHPIAHLWYPKDDNBGPMJELQHPIAHZWUYJH"

blocks = ["", "", ""]
output = ""
for i in range(len(ciphertext)):
    if i % 3 == 0:
        output += "\\textcolor{red}{" + ciphertext[i] + "}"
    elif i % 3 == 1:
        output += "\\textcolor{blue}{" + ciphertext[i] + "}"
    elif i % 3 == 2:
        output += "\\textcolor{darkgreen}{" + ciphertext[i] + "}"
    blocks[i%3] += ciphertext[i]
print(output)
print(blocks)