#include <iostream>
#include <fstream>
#include <cstring>
using namespace std;
ifstream fin("dir.in");
ofstream fout("dir.out");
char cuv[1605],sti[1605],linie;
char ma[1005][100];
int i,dr,o,q1,q2,nr,cuvinte;
int main()
{
    fin.get(cuv,1601);
    fin.get();
    cuvinte=0;
    i=0;
    nr=strlen(cuv);
    while (i<nr)
    {
        if (cuv[i]>=97 and cuv[i]<=122)
        {
            cuvinte++;
            while (cuv[i]>=97 and cuv[i]<=122)
                i++;
        }
        else
            i++;
    }
    fout<<cuvinte<<'\n';
    i=0;
    nr=strlen(cuv);
    dr=-1;
    linie=0;
    while (i<nr)
    {
        if (cuv[i]>=65 and cuv[i]<=89)/// or (cuv[i]>=48 and cuv[i]<=57))
        {
            while(cuv[i]!='(')
            {
                sti[++dr]=cuv[i];
                i++;
            }
        }
        if (cuv[i]>=97 and cuv[i]<=122)
        {
            o=0;
            linie++;
            while (cuv[i]!=',' and cuv[i]!=')')
            {
                ma[linie][o++]=cuv[i];
                i++;
            }
        }
        if (cuv[i]=='(')
        {
            sti[++dr]='\\';
            i++;
        }
        if (cuv[i]==',')
        {
            i++;
        }
        if (cuv[i]==')')
        {
            for (q1=1;q1<linie;q1++)
            {
                for (q2=q1+1;q2<=linie;q2++)
                {
                    if (strcmp(ma[q1],ma[q2])>0)
                    {
                        swap(ma[q1],ma[q2]);
                    }
                }
            }
            for (q1=1;q1<=linie;q1++)
            {
                fout<<sti<<ma[q1]<<'\n';
            }
            while(sti[dr]!='\\' and dr>-1)
            {
                dr--;
            }
            sti[dr]='\0';
            i++;
            while(sti[dr]!='\\' and dr>-1)
            {
                dr--;
            }
            if (dr>=0)
                sti[dr+1]='\0';
            linie=0;
        }
    }
    ///nr=strlen(cuv)
   /*p=strtok(cuv,"(");
   while (p!=NULL)
   {
       strcpy(sti,p);

   }*/
   return 0;
}