C111123313331323113313331333133313121111133112111133132311213121   >>    C11112331333132311331333133313331312111113311211113313231121312   <<    C111123313331323113313331333133313121111133112111133132311213123   >>      C111123313331323113313331333133313121111133112111133132311213122   >>