a b c    d     n
3 4 1    text2 pan
3 4 100  pan   0.34679014
3 4 2    text2 pan
3 4 200  eks   0.75867996
3 4 3    text2 wye
3 4 300  wye   0.20460331
3 4 4    text2 wye
3 4 400  eks   0.38139939
3 4 5    text2 pan
3 4 500  wye   0.57328892
3 4 6    text2 pan
3 4 600  zee   0.52712616
3 4 7    text2 zee
3 4 700  eks   0.61178406
3 4 8    text2 wye
3 4 800  zee   0.59855401
3 4 9    text2 wye
3 4 900  hat   0.03144188
3 4 10   text2 wye
3 4 1000 pan   0.50262601
