#include <cstdio>
#include <cstring>
#define MOD1 666013
#define MOD2 1000003
char a[2000001],b[2000001];
int v[1001];
int main(){
    FILE* fin=fopen("strmatch.in","r");
    FILE* fout=fopen("strmatch.out","w");
    int nra1=0,nra2=0,nrb1=0,nrb2=0,nr=0,n1,n2,i,x1=1,x2=1,nr1,nr2;
    fscanf (fin,"%s %s",&a,&b);
    n1=strlen(a);
    n2=strlen(b);
    for (i=0;i<n1;i++){
        if (a[i]>='0' && a[i]<='9')
            nr1=a[i]-'0';
        if (b[i]>='0' && b[i]<='9')
            nr2=b[i]-'0';
        if (a[i]>='a' && a[i]<='z')
            nr1=a[i]-'a'+10;
        if (b[i]>='a' && b[i]<='z')
            nr2=b[i]-'a'+10;
        if (a[i]>='A' && a[i]<='Z')
            nr1=a[i]-'A'+36;
        if (b[i]>='A' && b[i]<='Z')
            nr2=b[i]-'A'+36;
        nra1=(nra1*62+nr1)%MOD1;
        nra2=(nra2*62+nr1)%MOD2;
        nrb1=(nrb1*62+nr2)%MOD1;
        nrb2=(nrb2*62+nr2)%MOD2;
        if (i){
            x1=(x1*62)%MOD1;
            x2=(x2*62)%MOD2;
        }
    }
    for (i=n1;i<n2;i++){
        if (nra1==nrb1 && nra2==nrb2){
            nr++;
            if (nr<=1000)
                v[nr]=i-n1;
        }
        if (b[i-n1]>='0' && b[i-n1]<='9')
            nr1=b[i-n1]-'0';
        if (b[i]>='0' && b[i]<='9')
            nr2=b[i]-'0';
        if (b[i-n1]>='a' && b[i-n1]<='z')
            nr1=b[i-n1]-'a'+10;
        if (b[i]>='a' && b[i]<='z')
            nr2=b[i]-'a'+10;
        if (b[i-n1]>='A' && b[i-n1]<='Z')
            nr1=b[i-n1]-'A'+36;
        if (b[i]>='A' && b[i]<='Z')
            nr2=b[i]-'A'+36;
        nrb1=((((nrb1-(nr1*x1)%MOD1+MOD1)%MOD1)*62)%MOD1+nr2)%MOD1;
        nrb2=((((nrb2-(nr1*x2)%MOD2+MOD2)%MOD2)*62)%MOD2+nr2)%MOD2;
    }
    if (nra1==nrb1 && nra2==nrb2){
        nr++;
        if (nr<=1000)
            v[nr]=n2-n1;
    }
    fprintf (fout,"%d\n",nr);
    if (nr>1000)
        nr=1000;
    for (i=1;i<=nr;i++)
        fprintf (fout,"%d ",v[i]);
    return 0;
}