13
10
1s 1s 2s 2s 3s 3s 4s 4s 5s 5s 6s 6s 7s 
1s 2s 2s 3s 3s 4s 4s 5s 5s 6s 6s 7s 8s 
1s 2s 3s 3s 4s 4s 5s 5s 6s 6s 7s 8s 9s 
1s 2s 3s 3s 4s 4s 5s 5s 6s 6s 7s 8s 8s 
1s 2s 3s 3s 4s 4s 5s 5s 6s 6s 7s 8s 7s 
1m 1m 2m 2m 3m 3m 4m 4m 5m 5m 6m 6m 7m 
2m 2m 3m 3m 4m 4m 5m 5m 6m 6m 7m 7m 8m 
3m 3m 4m 4m 5m 5m 6m 6m 7m 7m 8m 8m 9m 
3s 3s 4s 4s 5s 5s 6s 6s 7s 7s 8s 8s 9s 
3p 3p 4p 4p 5p 5p 6p 6p 7p 7p 8p 8p 9p