n = int(input())asfa ew rewa fafowfe

a = ""ewor ewfoaidsfodsaifoasd fds

for i in range(1,n+1):ewrosai 

    a+=str(i)ewofsa

print(*a)eworewrijiod

for i in range(1,n):eworaewor

    b = list(a[i-i*2-1:-1:])ewokra

    b.reverse()eworwidfjao ds

    print(*a[i::],*b)eorahfaidsfso

# JalenLam_progamer