C111123313121111121111331333133313331333133313331122112323221221   >>    C11112331312111112111133133313331333133313331333112211232322122   <<    C111123313121111121111331333133313331333133313331122112323221223   >>      C111123313121111121111331333133313331333133313331122112323221222   >>