$1!Og!We(B($1!0&(B) : s $1!Og!We!M"!8<!NY (B: $1!:J!<i!2z!Cd (B/ s - $1!Be!BX!4H!C]!We!3N!A,!:`!DCs ($1!T+!4I!<D (B: s $1!_N!9%!3K!JH!7t!CU(B, s)