C11112331312111112111133133313331333133313132211312111133132332113311321   >>    C1111233131211111211113313331333133313331313221131211113313233211331132   <<    C11112331312111112111133133313331333133313132211312111133132332113311323   >>      C11112331312111112111133133313331333133313132211312111133132332113311322   >>