C1111233131211111211113313331333133313121111133313331333133313331323223322231   >>    C111123313121111121111331333133313331312111113331333133313331333132322332223   <<    C1111233131211111211113313331333133313121111133313331333133313331323223322233   >>      C1111233131211111211113313331333133313121111133313331333133313331323223322232   >>