??? ??? ???????? ???? ?? ?? ???? ?? ‘??’??. ??? ?? 100?～300?? ??. ??? ? ???? ????? ???? ???? ??? ?????? ???? ??? ???? ?.

????? C?? “???? ?? ??? ??? ?????? ????? Y, P? ??? ????”? “??? 50?～100??”??? ????.

?? ???? ? ???? “??? ??? ?? ???? ???? ?? ??? 30???? 50?? ???? ??? ???? ???? ??? ??? ???? ???”? ???. ??? ?????? ??? “?? ??? 100?? ??? ???? 3,4? ????”? ???.

??? ????? L?? “??????? 100?～200??? ???? ?? ??? ?? ??”? “??? ???? 2000??? ?? ???? ??? ?? ?”??? ???.

???? ?? ??? ????? ??? ‘???’? ????? 20???? ?? ???? ??? ??? ?? 200?～300??? ????? ? ?????? ???. ?? “???? ???? ???? ???? ??? ????? ???? ??”? ????.

?? ?????? ??? ????? “?????? ?? ??? ???”? “??? ??? ???? ???? ??? ??? ??? ??? ?? ‘??’”??? ???.

??? ???? ???? ????? ???? ???? ???? ???? ??? ?????.??? ???? ?? ??? ?? ??? ??? ??? 1???? ????? ?? ??????? ???? ???? ???? ??? ??? ??.

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