C11112331312111112111133132313331333133313232213331333131121132332111   >>    C1111233131211111211113313231333133313331323221333133313112113233211   <<    C11112331312111112111133132313331333133313232213331333131121132332113   >>      C11112331312111112111133132313331333133313232213331333131121132332112   >>