C11112331312111112111133133313331333133313223223313231311213131   >>    C1111233131211111211113313331333133313331322322331323131121313   <<    C11112331312111112111133133313331333133313223223313231311213133   >>      C11112331312111112111133133313331333133313223223313231311213132   >>