C11112331312111112111133132313331333133313233313113313331323211   >>    C1111233131211111211113313231333133313331323331311331333132321   <<    C11112331312111112111133132313331333133313233313113313331323213   >>      C11112331312111112111133132313331333133313233313113313331323212   >>