C1111233131211111211113313231333133313331323221333133313232233131   >>    C111123313121111121111331323133313331333132322133313331323223313   <<    C1111233131211111211113313231333133313331323221333133313232233133   >>      C1111233131211111211113313231333133313331323221333133313232233132   >>