a   b   i x          y
pan pan 1 0.34679014 0.72680286
eks pan 2 0.75867996 0.52215111

aaa b   i x          y          a
wye wye 3 0.20460331 0.33831853 -

a   bbb i x          y          b
eks wye 4 0.38139939 0.13418874 -

a   b   i xxx        y          x
wye pan 5 0.57328892 0.86362447 -

a   b   i x          y
zee pan 6 0.52712616 0.49322129

a   b   iii x          y          i
eks zee 7   0.61178406 0.18788492 -

a   b   i x          yyy        y
zee wye 8 0.59855401 0.97618139 -

aaa bbb i x          y          a b
hat wye 9 0.03144188 0.74955076 - -

a   b   i  x          y
pan wye 10 0.50262601 0.95261836
