#include<stdio.h>
#include<string.h>
#include<ctype.h>
int main()
{
    char name[20];
    int len,i,j;
    if(fgets(name,sizeof(name),stdin)==NULL)
    {
        printf("Invalid input");
        return 0;
    }
    name[strcspn(name, "\n")] = '\0';
    len = strlen(name);
    if(len <= 0 || len>= 10)
    {
        printf("Invalid input");
        return 0;
    }
    for(i= 0;i<len;i++)
    {
        if(isdigit(name[i]))
        {
            if(isdigit(name[i]))
            {
                printf("Invalid input");
                return 0;
            }
        }
        for(i =1;i<=len;i++)
        {
            for(j = 0;j<len - i;j++)
            {
                printf(" ")
            }
        }
        printf("\n");
    }
    return 0;
}