-.3 7 .2 7 .5 .4 .12 13 16 17 18 19 20 .2 3 .10 11 14 15 .-.8 11 14 15 .8 10 14 15 .6 13 16 17 18 19 20 .6 12 16 17 18 19 20 .8 10 11 15 .8 10 11 14 .6 12 13 17 18 19 20 .6 12 13 16 18 19 20 .6 12 13 16 17 19 20 .6 12 13 16 17 18 20 .6 12 13 16 17 18 19 .