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Hail is sib tae rain, cep it is makkit o frost. The frost, oreeginally watter e'en tho it's unner freezin pynt, comes thegither aboot a wee bittie o stour, or e'en smaw flichtan o frost or snaw. An faws tae the grund ablo whan it gits wechtie. Hail for ordinar kythes in throu a thunnerstorm.