This uses C (NOT C++) please help me I have less than 1 hours This uses C

Write a function that prints the following pattern, based on the input value for N. If N-3, it should print 1 2 3 1 2 3 9 8 7 If N = 4, it should print 1 2 3 4 1 2 3 4 9 8 7 6 9 8 7 6 If N = 5, it should print 1 2 3 4 5 1 2 3 4 5 9 8 7 6 5 9 8 7 6 5 1 2 3 4 5 If N = 6, it should print 1 2 3 4 5 6 1 2 3 4 5 6 9 8 7 6 5 4 9 8 7 6 5 4 1 2 3 4 5 6 1 2 3 4 5 6