public class Main {
public static void main(String args[]) {
String statement = " a b c abc bca cba";
String tokens[] = null;
String splitPattern = "a|abc|bac|" + "b|(c)|(cba)";
tokens = statement.split(splitPattern);
for (int i = 0; i < tokens.length; i++) {
System.out.println(tokens[i]);
}
}
}