1 , 2 " 3 4 5 6 7 8 9 10 11 12 13 14 15 16 " 17 , 18 " 19 20 , " 21 , 22 " 23 24 25 26 , 27 28 29 30 31 32 33 " 34 , 35 36 37 38 39 40 41 42 43 44 45 46 , 47 48 49