" NuBrain code running two threads that simultainiously alternate character output"

"reverse condition testing and set int math to CHR/STR" 
!$
"open first thread, reverse conditons, move two spaces to the right, set int math to STR/CHR, start spitting out characters"

{!>>$h.l.o.w.r.d.}
{!>$e.l._.o.l.} "same as above, except applied one space to  the left of the above therad."

"by this point all threads have closed and the only remaining thread is the \"main\" thread"

!
>>>

"normal brain f*ck code
+++++[>+++++[>++++<-]<-]>>. "

"Converted NuBrain Code"
+5[>+5[>+4<-1]<-1]>>.