| makeresults
| eval _raw="col1 col2
Name1 a
b
c"
| multikv forceheader=1
| table col1 col2
| eval tmp=mvappend(col1,col2)
| stats list(tmp) as tmp
| mvexpand tmp
| streamstats count
| eval cols="col".count
| xyseries count cols tmp
| eval count=1
| stats values(*) as * by count
| fields - count
It's not easy.