C11112331312111112111133133313331333132112312111133131122112121   >>    C1111233131211111211113313331333133313211231211113313112211212   <<    C11112331312111112111133133313331333132112312111133131122112123   >>      C11112331312111112111133133313331333132112312111133131122112122   >>