#include<cstdio>
#include<cstring>

using namespace std;
int main(void)
{
	char a[1000] = {0};
	int i,j;
	while(scanf("%[^\n]",a) != EOF)
	{
		int as = strlen(a);
		for(i = 0;i < 26;i++)
		{
			if(strstr(a,"this") || strstr(a,"that") || strstr(a,"the")) break;
			for(j = 0;j < as;j++)
			{
				if(a[j] != 46 || a[j] != 32)
				{
					if(a[j] >= 'z')
					{
						a[j] = 'a';
					}
					else
					{
						a[j]++;
					}
				}
			}
		}
		printf("%s\n",a);
	}
	return 0;
}