7 0.4296875 0.5 0.66015625 1
14 0.5693359375 0.552734375 0.861328125 0.89453125
8 0.5 0.623046875 1 0.75390625
15 0.634765625 0.1318359375 0.31640625 0.263671875
15 0.818359375 0.111328125 0.328125 0.22265625