C1111233131211111211113313331323133313231121211113313331331122133313232212111   >>    C111123313121111121111331333132313331323112121111331333133112213331323221211   <<    C1111233131211111211113313331323133313231121211113313331331122133313232212113   >>      C1111233131211111211113313331323133313231121211113313331331122133313232212112   >>