The following are some of the best keyboard results I got over a couple of months, with modifications to my algorithm in between. Later results are later (though oddly, generally higher energy, which means that they were not as good by my English-frequencies metric).
Energy: 3.289477
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J
B F
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Q U R
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| Energy: 3.202828
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B N I T A P 0
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Energy: 3.202828
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Z K X
| Energy: 4.643289
B <_ J
U F 8
Q G Z
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Energy: 5.067546
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| Energy: 4.869098
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H I O F
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Energy: 5.031903
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| Energy: 4.803424
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