class TestArr{
public static void main(String[] arg){
String a="aabbccddeeff";
String[] str=new String[3];
System.out.println(a.length());
int count=0;
for(int i=0;i<a.length();i++){
int index=i%4;
if(index==0){
str[count]=a.substring(count*4,(count+1)*4);
count++;
}
}
for(int j=0;j<str.length;j++)
System.out.println(str[j]);}
}
public static void main(String[] arg){
String a="aabbccddeeff";
String[] str=new String[3];
System.out.println(a.length());
int count=0;
for(int i=0;i<a.length();i++){
int index=i%4;
if(index==0){
str[count]=a.substring(count*4,(count+1)*4);
count++;
}
}
for(int j=0;j<str.length;j++)
System.out.println(str[j]);}
}
String b[]=new String[ 20];
for (int i=0;(i<a.length()/4);i++)
{
b[i]=a.substring(i*4,i*4+4);
}