C/ED/EE/EF/EG/EA/EB/EC/ED/EE/EF/EG/E
C/GD/GE/GF/GG/GA/GB/GC/GD/GE/GF/GG/G
C/FD/FE/FF/FG/FA/FB/FC/FD/FE/FF/F
C/CD/CE/CF/CG/CA/CB/CC/CD/CE/C