ϺF(xin)I(y)W(xu)Ժ
ur(nng)I(y)W(xu)D^
ɽ|W(xu)D^
ɽ|ƼW(xu)uУ^(q)D
ɽ|ʯͻW(xu)ԺD^
߅W(xu)D^
ɽ|ʡD^
ɽ|r(nng)I(y)W(xu)D^
PݴW(xu)D^
W(xu)ԺD^