611341
1/
2B/3A/4/C5B6A
1ABC2abc3abcd4ABCD
1 2 3 4 5 7 8 9 10
6
11 BDE 12ABCDE 13 ABDE 14 ABCE 15 ACE
16 BCE 17 ACE 18 BCE 19 ABCE 20 ADE
1 3 4 5 6 9 10
2 7 8
11 ABCDE 12 ABC 13 ADE 14 ABC 15 AC
16 BCD 17 ABE 18 BCDE 19 ABCDE 20 ABDE
