000  $anz n  2
000  $a주제어
001  $aKSH1998018816
005  $a20021027000000
008  $a980429 n azknnaabn          |a a|a    | 
150  $a균형 괄호[均衡括弧]
450  $wr$i영어$abalanced parentheses
550  $a괄호[括弧]