12
15
8
9
13
17
20
16
21
20
21
21
17
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15
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12
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12
12
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15
16
21
21
21
15
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18
12
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21
15
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19
12
12
12
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14
12
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12
17
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21
12
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12
20
21
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21
21
21
21
14
21
15
21
16
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15
16
16
21
21
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17
21
20
21
15
17
17
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21
21
21
21
15
15
21
15
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16
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15