C11112331312111112111133132313331333133313232213331322232212111   >>    C1111233131211111211113313231333133313331323221333132223221211   <<    C11112331312111112111133132313331333133313232213331322232212113   >>      C11112331312111112111133132313331333133313232213331322232212112   >>