1> bar
2analyze(bar) =  st:bar <BAR <ZERO>>
3analyze(bar) =  st:bar <BAR >
4analyze(bar) =  st:bar <BAR <ZERODERIV> <ZERO>>
5analyze(bar) =  st:bar <BAR <ZERODERIV> >
6stem(bar) = bar
7> foo
8analyze(foo) =  st:foo <FOO >
9stem(foo) = foo
10> barbaz
11analyze(barbaz) =  st:bar <BAR <DERIV> <ZERO>>
12analyze(barbaz) =  st:bar <BAR <DERIV> >
13stem(barbaz) = bar
14