??1 DB
???? 12? ???? ??? ??? ???? ??? ????? ??? ?? ????.
???? ?? ??? ?? ????? ??? ???? ????? ???? 11? ??? ????.
?? ????? -5~4?, ? ????? 7~14?? ????. ??(???? -10~1?, ???? 3~10?)?? ?? ????. ??? ???? ???? 15? ??? ??? ????? ??? ????.
??? ?? ????? Δ?? 0? Δ?? 0? Δ?? -4? Δ?? 3? Δ?? -2? Δ?? -1? Δ?? 1? Δ?? 0? Δ?? 4? Δ?? 6??.
? ????? Δ?? 9? Δ?? 6? Δ?? 10? Δ?? 9? Δ?? 12? Δ?? 11? Δ?? 14? Δ?? 13? Δ?? 13? Δ?? 13??.
????? ?? ??? ?? ??, ???? ??? ?? ??? ???.
???? ??? ? ??? ‘??’ ??? ????. ?? ????? ????, ?? ??? ???? ??? ????? ??? ??? ????. ???? ??? ????? ‘?? ??’ ??? ??? ????.
????? ?? ??? ??? ????? ?? ??? ????? ??? ???? ???? ???? ?? ?? ?? ????? ???? ??.
(??=??1)