<120, [ 17, 72/5, 6, 1, 18/5, 12 ]> P = [ 1 34 68 17] [ 1 10 -4 -7] [ 1 0 -4 3] [ 1 -6 8 -3] Q = [ 1 17 68 34] [ 1 5 0 -6] [ 1 -1 -4 4] [ 1 -7 12 -6] L = [ [1 0 0 0] [0 1 0 0] [0 0 1 0] [0 0 0 1], [ 0 34 0 0] [ 1 12 20 1] [ 0 10 18 6] [ 0 2 24 8], [ 0 0 68 0] [ 0 20 36 12] [ 1 18 40 9] [ 0 24 36 8], [ 0 0 0 17] [ 0 1 12 4] [ 0 6 9 2] [ 1 8 8 0] ] L* = [ [1 0 0 0] [0 1 0 0] [0 0 1 0] [0 0 0 1], [ 0 17 0 0] [ 1 8/5 72/5 0] [ 0 18/5 37/5 6] [ 0 0 12 5], [ 0 0 68 0] [ 0 72/5 148/5 24] [ 1 37/5 208/5 18] [ 0 12 36 20], [ 0 0 0 34] [ 0 0 24 10] [ 0 6 18 10] [ 1 5 20 8] ] Ext Q-bip Double {18,17,72/5,6;1,18/5,12,18}