17 1j= 1z: 1 1j= 1z; 1? 1j= 1z9D 1 D 1j=D 1z8p 1]p 1j=p 1zW;R 1CR 1j=R 1z9~ 1~ 1j=~ 1zK< 1 1j= 1z9 18! 1j 1z 1m