pk1,pk2,sortable_with_nulls
d,g,0.46470846660323173
g,y,
g,z,0.10350187727039162
h,o,0.9053062089782412
e,u,
a,w,
d,e,0.5217467469384799
b,t,
f,z,0.4515549159652815
g,f,0.9745466021257082
f,m,0.8336930832963215
b,a,0.7290758494598506
b,e,0.48564112545071847
a,l,
c,q,0.5840794142042252
f,l,0.6704862188501712
a,o,0.9961213802400968
a,f,0.2931782814070929
g,i,0.41983249376450316
e,v,0.43068678785540004
h,l,0.6783068250650924
c,c,0.4312973996249869
b,u,0.7801162418714427
d,l,0.7028549421857689
g,w,0.5073368852897782
h,d,0.08150198744788395
e,o,0.7447051515651959
e,s,0.6267991790079878
b,l,
g,a,0.426764006260958
c,f,0.4298881499898346
h,r,
g,l,0.5931342503922638
h,b,0.7744647885737355
a,h,
b,y,0.8643529420302863
d,o,0.04551570098321833
c,o,
d,z,
a,k,0.913136124185545
b,w,0.15919784298073125
b,f,0.9265180735593334
d,u,
a,z,
c,y,0.6694588446199107
g,t,
h,h,0.9999766211030285
c,k,0.9579660422795397
f,n,0.44338308606070165
b,k,0.6697259747698292
b,c,
d,h,0.48754993239134437
b,v,0.024786361898188725
g,u,0.9512921405795819
f,t,0.26536750832497336
c,z,0.9637347441012087
e,d,0.3298036635789654
h,m,
b,n,0.43818457300770985
b,g,
f,k,0.045346811013382116
c,l,0.6675777325863531
h,e,0.5950412281515748
a,u,
e,h,
d,q,
d,x,0.5445623787105787
b,p,0.7424166839809987
d,n,0.8326283633270679
a,e,0.3589793804846284
a,n,
c,h,0.7511381375407322
e,i,
g,b,
c,u,0.6427496480093358
c,w,
e,w,0.3825442986168739
h,s,
d,b,
a,y,0.5141561198085891
e,y,0.3455656244430817
g,o,0.3970711742472973
b,i,
f,q,0.5542077884611291
h,c,0.32969075511772883
f,o,
a,t,
b,h,0.4767885171089349
g,j,
b,d,
c,i,
h,a,0.24774372359828423
b,z,
g,g,0.1804160719608544
h,q,0.099083124393048
h,p,0.4148969058190054
d,d,
d,p,0.5740642196263323
g,m,
a,q,0.9538159275210801
b,r,0.33355653860508816