1-4-2-5 11 - 12 - 10 - 5 ] 21 1+ 1 + 3 + 2 2 - 3 - 3 - 3 12 - 17 - 14 - 19 22 - H b 2 3 - 18 - 16 20 !3 — 19 — 13 — 14^ 23 +-+1