C111123313121111121111331333133313331323232133313331311213331122112312121   >>    C11112331312111112111133133313331333132323213331333131121333112211231212   <<    C111123313121111121111331333133313331323232133313331311213331122112312123   >>      C111123313121111121111331333133313331323232133313331311213331122112312122   >>