C111123313331323113313331333133313231323133312111113231333131133132323221   >>    C11112331333132311331333133313331323132313331211111323133313113313232322   <<    C111123313331323113313331333133313231323133312111113231333131133132323223   >>      C111123313331323113313331333133313231323133312111113231333131133132323222   >>