C11112331312111112111133133313331333133313132211312111113231333132322131   >>    C1111233131211111211113313331333133313331313221131211111323133313232213   <<    C11112331312111112111133133313331333133313132211312111113231333132322133   >>      C11112331312111112111133133313331333133313132211312111113231333132322132   >>