10
2m2m3m3m3m3m4m6m6m7m7m7m8m8m
1s1s2s2s2s3s3s4s4s7s8s9s9s9s
1p1p2p2p2p3p4p5p7p7p8p9p9p9p
1m1m1m2m3m4m4m4m5m6m6m6m7m8m
1m1m2m2m2m2m3m3m3m4m4m5m6m6m
2s3s4s5s5s6s6s6s7s7s8s9s9s9s
1s2s3s3s4s4s5s5s6s6s7s8s8s9s
1p2p2p2p3p3p3p3p4p4p5p7p8p9p
2p2p3p3p3p4p5p5p6p6p7p7p7p8p
1p1p2p2p3p4p5p6p6p6p7p7p8p9p