C1111233131211111211113313331333133313331333133313331333132311211312112331   >>    C111123313121111121111331333133313331333133313331333133313231121131211233   <<    C1111233131211111211113313331333133313331333133313331333132311211312112333   >>      C1111233131211111211113313331333133313331333133313331333132311211312112332   >>