package java.util.regex;
class PatternSyntaxException {
  int index;
  int pattern;
  int desc;
  int serialVersionUID;
}
class Pattern {
  int re;
  int flags;
  int regex;
  int UNIX_LINES;
  int UNICODE_CASE;
  int MULTILINE;
  int DOTALL;
  int COMMENTS;
  int CASE_INSENSITIVE;
  int CANON_EQ;
  int serialVersionUID;
}
class Matcher {
  int anchoringBounds;
  int transparentBounds;
  int regionEnd;
  int regionStart;
  int match;
  int appendPosition;
  int position;
  int inputCharIndexed;
  int input;
  int pattern;
}
class MatchResult {
}
