C11112331312111112111133133313331333133323131133133313223313233313221132321   >>    C1111233131211111211113313331333133313332313113313331322331323331322113232   <<    C11112331312111112111133133313331333133323131133133313223313233313221132323   >>      C11112331312111112111133133313331333133323131133133313223313233313221132322   >>