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Old English ealswā (inherited)
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Middle English also (inherited)
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Middle English alswo (mention)
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Middle English alswa (mention)
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Middle English als (mention)
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Middle English as (mention)
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West Frisian alsa (cognate)
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Norwegian Bokmål altså (cognate)
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Norwegian Nynorsk altso (cognate)
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Old Saxon alsō (cognate)
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Saterland Frisian also (cognate)