#1
#2 2
#3 3 3
#4 4 4 4
#5 5 5 5 5

user_rows = int( input() )

for row in range(1, user_rows + 1):
    #Pattern
    print( " ".join( str(row) for number in range(1, row + 1)), end = '' )

    #New line at every line except last one
    if not row == user_rows:
        print("")