H 2 s e

H 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s e
H 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s e
H 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s eH 2 s e