C1111233131211111211113313331333133313231121133212331333133313221333122331   >>    C111123313121111121111331333133313331323112113321233133313331322133312233   <<    C1111233131211111211113313331333133313231121133212331333133313221333122333   >>      C1111233131211111211113313331333133313231121133212331333133313221333122332   >>