C11112331312111112111133133313331333133313122111133133313113313331322112121   >>    C1111233131211111211113313331333133313331312211113313331311331333132211212   <<    C11112331312111112111133133313331333133313122111133133313113313331322112123   >>      C11112331312111112111133133313331333133313122111133133313113313331322112122   >>