ϺF(xin)I(y)W(xu)Ժ
W(xu)Ժ
u۞I(y)g(sh)W(xu)ԺD^
u۞I(y)g(sh)W(xu)Ժ
ϳI(y)g(sh)W(xu)ԺD^
ϾW(xu)бW(xu)ԺD^
ϴW(xu)D^
RW(xu)ԺD^