C11111333133313232233133313331333131133132313231333131233132322221   >>    C1111133313331323223313331333133313113313231323133313123313232222   <<    C11111333133313232233133313331333131133132313231333131233132322223   >>      C11111333133313232233133313331333131133132313231333131233132322222   >>