Failed in 3 test out of 6

#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>

int main()
{
int a,b,n;
scanf("%d%d", &a, &b);
// Complete the code.
{
for( n=a;n<=b;n++)
{
if(n==1)
printf(“one\n”);
else if(n==2)
printf(“two\n”);
else if(n==3)
printf(“three\n”);
else if(n==4)
printf(“four\n”);
else if(n==5)
printf(“five\n”);
else if(n==6)
printf(“five\n”);
else if(n==7)
printf(“seven\n”);
else if(n==8)
printf(“eight\n”);
else if(n==9)
printf(“nine\n”);
else
{
if(n>0&&n>9&&n%2==0)
printf(“even\n”);
else if(n%2!=0)
printf(“odd\n”);
}
}
}
}