C1111233131211111211113313331333133313331312211113313331311331333132311212131   >>    C111123313121111121111331333133313331333131221111331333131133133313231121213   <<    C1111233131211111211113313331333133313331312211113313331311331333132311212133   >>      C1111233131211111211113313331333133313331312211113313331311331333132311212132   >>