Once you get past the initial and very brief learning curve, this is a very efficient way of memorizing the otherwise difficult Irregular Verbs of the German language.
My only criticism is that I wish a brief explanatory lesson was included (perhaps I missed it) on the usage of "hat" versus "ist" on some of these verbs. While it is simple to just memorize these as they are presented with the verbs, it is still nice to understand why they happen to be that way.
Otherwise, great art, great technique, simple functionality and usage.
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