[捠忢媄]
a乧庛

b乧拞

x乧嫮

y乧僎乕僕媄

[昁嶦媄]
敼乧D, DF, F, a b x y

戦乧F, D, DF, a b x y

榟乧B,  F, a b x y

墠乧D, D, a b x y 嬻拞偱傕巊梡壜擻

殡乧D, DF, F, a b x y 嬻拞偺傒巊梡壜擻

[挻昁嶦媄]
僎乕僕1徚旓
棆捁乧D, DF, F, a+b

孮捁乧D, DB, B, a+b

僎乕僕2徚旓
朠檧乧D, DF, F, x+y 20僸僢僩埲忋偺帪偵巊梡壜擻

敧欯塆乧D, DB, B, x+y