What is the difference between these imperative forms:

nas- **ai**

nas- **are**

nas- **aimase**

nas- **aimashi**

(As far as I understand these verb forms apply only to the honorific –aru
verbs _irassharu, ossharu, kudasaru, gozaru_ and _nasaru_ , or am I mistaken?)
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2017-12-14T13:59:09.283
55174
2022-05-29T09:27:28.333
26877
question
grammar usage verbs imperatives
What is the difference between the imperative forms of the -aru verbs?
You could hear nasai and rarely nasaimase in formal situations but won't
nasare and nasaimasi. The latter two are archaic.
CC BY-SA 3.0
2017-12-15T09:36:07.903
55197
2017-12-15T09:36:07.903
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answer
nasai and nasaimase are イ音便 forms for nasare and nasarimase. nasaimashi is an
uncommon alternative for nasaimase. nasai and nasaimase are different in that
mase is more formal (for a customer perhaps) and might give a kind of refined
air to it in some cases.
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2022-05-28T15:30:17.200
94728
2022-05-29T09:27:28.333
2022-05-29T09:27:28.333
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48769
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answer