BEGIN {
x["0"] = "0"
x["1"] = "1"
x["2"] = "2"
x["3"] = "3"
x["4"] = "4"
x["5"] = "5"
x["6"] = "6"
x["7"] = "7"
x["8"] = "8"
x["9"] = "9"
x["A"] = "a"
x["B"] = "b"
x["C"] = "c"
x["D"] = "d"
x["E"] = "e"
x["F"] = "f"
}
{
s = ""
for (i = 1; i <= 6; ++i) {
t = substr($0, i, 1)
s = s x[t]
}
s = s substr($0, 7)
print s
next
}