7,8,11,7,15,(),19,5
A.8 B.6 C.11 D.19
:3,15,7,12,11,9,15,()。 A.6 B.8 C.18 D.19
:1 5,7,12,11,9,1 5,()。 A.6 B.8 C.18 D.19
7, 8, 11, 7, 15, (), 19,5 A.8 B.6 C.11 D.19
1 5,7,12,11,9,1 5,()。 A.6 B.8 C.18 D.19
15,7,12,11,9,15,()。 A.6 B.8 C.18 D.19
2,3,5,7,() A.8 B.9 C.11 D.12