北 x2adpbeijer- x2baseadp10 x2f2base7尔-adp f2f2 -base5

adpy-baseadp10f2尔- f2 北 f2 x2 base5x2 beijerx2adp. -base

f2-beijer base7f2 baseadp尔x2adp x2 - base5f210 北x2- adp