def R2(w):
    if w.startswith(tuple(overstemmed)): return R1(R1(R1(w)))
    return R1(R1(w))
When attaching to a new fgraph, check that
dataset/ETHPy150Open clips/pattern/pattern/vector/stemmer.py/R2--crossover with--dataset/ETHPy150Open rizar/attention-lvcsr/libs/Theano/theano/gof/destroyhandler.py/DestroyHandler.on_attach