]mm=. 3 4$10|i.12 0 1 2 3 4 5 6 7 8 9 0 1
4{."1(i.3)|."0 1+/\.(-i.3)|."0 1[6{."1 mm
0 5 15 18
4 13 15 7
8 9 0 1
Istvan Kadar
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