C11111333133313331211211331333133313331323133313331333131133132213121   >>    C1111133313331333121121133133313331333132313331333133313113313221312   <<    C11111333133313331211211331333133313331323133313331333131133132213123   >>      C11111333133313331211211331333133313331323133313331333131133132213122   >>