C11112331312111112111133133313331333132313233313331311321323321   >>    C1111233131211111211113313331333133313231323331333131132132332   <<    C11112331312111112111133133313331333132313233313331311321323323   >>      C11112331312111112111133133313331333132313233313331311321323322   >>