fun main() {
    val builder = StringBuilder()

    val n = readInputLine().toInt()

    val ans = Array(n) { IntArray(n) }

    for (i in 1..n) {
        var current = i
        for (j in i..i + n) {
            ans[i - 1][(j - 1) % n] = current
            current--
            if (current == 0) {
                current = n
            }
        }
    }

    ans.forEach { builder.appendLine(it.joinToString(" ")) }

    print(builder.toString())
}

fun readInputLine(): String {
    return readLine()!!
}