C11112331312111112111133133313331333132112312111111331322312121   >>    C1111233131211111211113313331333133313211231211111133132231212   <<    C11112331312111112111133133313331333132112312111111331322312123   >>      C11112331312111112111133133313331333132112312111111331322312122   >>