C11112331312111112111133133313331333133313123313331322132213131   >>    C1111233131211111211113313331333133313331312331333132213221313   <<    C11112331312111112111133133313331333133313123313331322132213133   >>      C11112331312111112111133133313331333133313123313331322132213132   >>