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

struct word {char *str;
            int count;
            struct word *next;
            }*first=NULL,kol;

int main()
{
    void output(void);
    void copy_next(int ,char []);
    int i=0;

    char buf[2048];

    struct word *q;

    kol.count=0;

     while((buf[i]=getchar())!=EOF)
        {
            if((buf[i]<='z' && buf[i]>='a')||(buf[i]>='A' && buf[i]<='Z'))
            {
            i++;
            }
            if(((buf[i]==' ')||(buf[i]=='\t')||(buf[i]=='\n'))&&(i!=0))
            {
                    buf[i]='\0';
                    i=0;
                    copy_next(i,buf);
            }
        }
    printf("\n");

    while(first)
    {
         output();
    }
}


void output(void)
{
    struct word *q;
        if(kol.count==0)
        {
            printf("%s  ",first->str);
            printf("%d\n",kol.count);
        }
        q=first;
        first=first->next;
        free(q->str);
        free(q);
}


void copy_next(int i,char buf[])
{
    char* r;
    struct word *q;
    struct word *r2;
    struct word *first1;
    struct word kol2;
    int k=0;

    first1=first;

    r=(char*)malloc(i);
    if(r==NULL)
        {
            exit(1);
        }


    if((r2=(struct word *)malloc(sizeof(struct word)))==NULL)
    {
            exit (1);
    }

    strcpy(r,buf);

    while(first1)
        {
            if(r2->str==r)
            {
                kol2.count=k+1;
                free(r);
            }
            q=first1;
            first1=first1->next;
        }


            r2->str=r;
            q=first;
            first=r2;
            r2->next=q;
}