C11112331312111112111133133313331333132112312111111331323211111   >>    C1111233131211111211113313331333133313211231211111133132321111   <<    C11112331312111112111133133313331333132112312111111331323211113   >>      C11112331312111112111133133313331333132112312111111331323211112   >>