C11112331312111112111133133313331333132112312111133211231233131   >>    C1111233131211111211113313331333133313211231211113321123123313   <<    C11112331312111112111133133313331333132112312111133211231233133   >>      C11112331312111112111133133313331333132112312111133211231233132   >>