C1111233131211111211113313231333133313331323221333132313331311233133311232331   >>    C111123313121111121111331323133313331333132322133313231333131123313331123233   <<    C1111233131211111211113313231333133313331323221333132313331311233133311232333   >>      C1111233131211111211113313231333133313331323221333132313331311233133311232332   >>