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

int main()
{
    int car, i;
    int c[26] = {0};

    while((car=getchar())!= EOF){
    	c[car - 'a']++;
    }


	/***
	A=7
	B=12
	C=2
	....
	***/

	for(i = 0; i < 26; i++)
		printf("%c = %d\n", i + 'a', c[i]);
    return 0;

}