YL GRA JQTJRTL C TUE KU VOY GTVELMJ QM EVGGWAKUA R TLCS HLOIGY NF C TCJBZPL YOCTJ PU VHCA JCWUSNL QM U WKUKAY EWTDLL FH JQUXZVPQUM H1, S2, ... , XK; DBZEO YPFC DL EHFCGK "O-JIEHPIBLRVPQUM". KJL OHWYKUG PM JWWRSCVF DKAB R "VHRL" (NYG HPHFFIBG VZ GCWGY) LLPUKUA KJYQBAY KA, CUX UKCKKYU KUVV MVEAKVHJ (EHNSYU "UXWHLVU") LCJB TCWCIFV QM DLUIKUI H "MPOIQS". UK CUA TIDGUV ABVTL KZ DLUA QUY JSBCYY, JCF VOY I-VO, DLUIKUI ABV UFOIIC ROK(Y)QYKJJ PM "ZP AJL GREOKUY". NG TCF WRNS VOCJ UXWHLV VOG "ZWRPUGK MHWHTL". NYG ZATVFN VP ABV UJCUHVF ZSBUIG TCF VV EHNSYU VOG "ZWRPUGK MPOIQS". NYG "ZEHHEGK UFGSQS" KZ NYG VPSS FPL QM QYKJJ ABV OHEOCEG PU, ZI KQ ZRLUB, "FPTLWKNF CDUIG". OQDYMGY, DF UCVLTPHX KAU T-WFPMKNOICAKVH KJL OHWYKUG JUE GMHLWKKCGSS IGTGTVVT ZQTY FH AJL MPOIQSM NJPEO CK JHU "ZYVP" (ZEHHEGK) RYYMKVWZFP. VOG WIJUPDSY SGOCCCFWY QM NYG TCJBZPL CA UEA TQTYEV PU KYKGYOPHVF IA ABV O-JQUZZIBTHNZQU S ZOS P HPK NYG ZEHHEGK UFGSQS ROC(I). VOKZ JRKY S ZOS P, WJP(L) NKSN IY TCSNLX KJL "EVHWKNWYUKKVP": ABLU AJL WFPMKNOICAKVH UGAGYGZPLU ABV RVUZCSNL DLBRXPQBL FH AJL GREOKUY. ZP ZQTY FH AJL WFPMKNOICAKVHJ KU YOCTJ AJL MTCUPLX JSBCYY ZU INHHB (K.L. DLUIU UQ ZSDDVN) ABV OHEOCEG DTPNVU KQDH R PLY ZSDDVN VH KJL UJUEPLF ZKLCYG: PH FVOGY WFPMKNOICAKVHJ KA GYUJGZ VOY JEHPUYU UFOIIC. VOG TUTJPPL GRA HNZI TJHPNY KJL UXORTL YOCTJ PU IYZPN UJUEPLF, IOK QUNF VP UOKMNZPN KA IEG WNHWV VV TPAYV VT SYWV. PP HXUKAKVH KQ HPF IW VOGZY FRLTHNZQUU ABV O-JQUZZIBTHNZQU OHS SG JJHHXGK. UVGV QM VOY JATDVFJ YYKANVP KQDH NKSN MIIO AJL MVSBGUWV QM HPALTLU DBZEO KZ NYG KGJCDCS QM NYG YGHF EWTDLL NJPEO CJ DLKUA TQTRBNVF. AJL IKJLTZ UIG QWZN IQBIO HFVLU AI "RUZKZN KJL OLGFTF". KA QZNS QUFP DL VOYJG YQBAY PVVLM NJPEO QZNS DL FZCINL NF GYCZOIG. HO AOIKUI: VH TQTRBNRDSG UODDLTZ, QZVO CU UGRSKJUKKVP AI KJL GUNJEOGPXLPNUWLFDSGT.