C11112331312111112111133132313331333133313233313331333132212121121131   >>    C1111233131211111211113313231333133313331323331333133313221212112113   <<    C11112331312111112111133132313331333133313233313331333132212121121133   >>      C11112331312111112111133132313331333133313233313331333132212121121132   >>