C11112331312111112111133133313331333132323133313331313322233231   >>    C1111233131211111211113313331333133313232313331333131332223323   <<    C11112331312111112111133133313331333132323133313331313322233233   >>      C11112331312111112111133133313331333132323133313331313322233232   >>