Half of e 1 has be 1 and bbg 1, and the whole transformer has bbe 1 and bg 1.

#d2 has sounds of xc2 and e2 in half, and sounds of #c2 and #e2 in the whole;

Half of #d2 has d2 and xd2 sounds, and all have bd2 and f2 sounds.

18.C-D is complete, be-# E is complete, # G-BB is complete, # F-BBA is half, BB-C is complete, # B-D is complete, E-# F is complete, A-BB is half, # D-

19 . bb 1 = d 1 = xc 1，a 1=xg 1=bbd 1，bc2=#b 1=xa 1，f 1=#e 1=bbg 1，bd2=#c2=xb 1，#d6

xB=#c=bd，G=xF=bbA，xF=G=bbA，bbc=bB=#A，#B=c=bbd .