17.10.2017 / 14:50

'

18 +8.. + 13, +12.. + 18, + 21.

̳ + 1416

19 . . +4.. + 10, +9.. + 15, +17. ̳ - +1012

20 . +1.. + 7, +7.. + 12; +8.. + 10, +13.. + 15.

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