#include<cstring>

#include<cstdlib>

#include<cstdio>

#include<cctype>

#include<algorithm>

inline long long read(){

    long long num=,f=;

    char ch=getchar();

    while(!isdigit(ch)){

        if(ch=='-')    f=-;

        ch=getchar();

    }

    while(isdigit(ch)){

        num=num*+ch-'';

        ch=getchar();

    }

    return num*f;

}

long long f[][][];

char a[],b[],c[];

int x,y,z;

int last[][];

int main(){

    scanf("%s%s%s",a+,b+,c+);

    x=strlen(a+);y=strlen(b+);z=strlen(c+);

    for(int i=;i<=x;++i){

        last[][a[i]]=i;    memset(last[],,sizeof(last[]));

        for(int j=;j<=y;++j){

            last[][b[j]]=j;    memset(last[],,sizeof(last[]));

            for(int k=;k<=z;++k){

                last[][c[k]]=k;

                for(int l='a';l<='z';++l){

                    int n=last[][l],m=last[][l],s=last[][l];

                    if(n&&m&&s)    f[i][j][k]+=f[n-][m-][s-]+;

                }

            }

        }

    }

    printf("%lld",f[x][y][z]);

    return ;

}