1 group1 test1 att1 val1 2 group1 test1 att2 val2 3 group1 test1 att3 val3 4 group1 test1 att4 val4 5 group1 test2 att1 val5 6 group1 test2 att2 val6 7 group1 test2 att3 val7 8 group1 test2 att4 val8 9 group2 test3 att1 val1 10 group2 test3 att2 val2 11 group2 test3 att3 val3 12 group2 test4 att1 val4 13 group2 test4 att2 val5 14 group2 test4 att3 val6 15 group1 \N att1 val9 16 group1 \N att2 val10 17 group1 \N att3 val11 18 group1 \N att4 val12