ɽ|t(y)ˎߵȌƌWУ
II(y)WD
ɽ|WD^
ɽ|WУ^(q)D^
ɽ|ʯͻWԺD^
ώWԺ
ɽ|һt(y)ƴWD^
ʹWD^
ɽ|ڶt(y)ƴWD^
It(y)WԺD^
It(y)WԺD^