C1111233131211111211113313331333133313232321331133132313331333131211111221121   >>    C111123313121111121111331333133313331323232133113313231333133313121111122112   <<    C1111233131211111211113313331333133313232321331133132313331333131211111221123   >>      C1111233131211111211113313331333133313232321331133132313331333131211111221122   >>