C11112331312111112111133133313331333132313233313113313221211211131   >>    C1111233131211111211113313331333133313231323331311331322121121113   <<    C11112331312111112111133133313331333132313233313113313221211211133   >>      C11112331312111112111133133313331333132313233313113313221211211132   >>