#include<cstdio>

int main(){
    int n;
    scanf("%d",&n);
    for(int i = 1; i <= n; i++){
        int start = i-1;
        for(int j = 1; j <= n; j++){
            printf("%d ",start+1);
            start = (start+1)%n;
        }
        printf("\n");
    }
    
    return 0;
}