input question: Fix spacing: Costoffastorexpressdeliveryareadditionalindicationsandpricevarydependingontheserviceyouhaveselecteddeliverycountryofdeliveryandquantity/weightofgoodsordered.Weofferfreedeliveryinthemailaroundtheworld,thetimeofdeliverybymailisdifferentdependingoncountryofdestination.

output answer: Cost of fast or express delivery are additional indications and price vary depending on the service you have selected delivery country of delivery and quantity / weight of goods ordered . We offer free delivery in the mail around the world, the time of delivery by mail is different depending on country of destination.
Problem: ItisimpossibleinanarticlelikethistogivemuchinthewayofdetailsoftheimpressivepublicationsbyAskeyontheharmonicanalysisofspecialfunctions,orthogonalpolynomialsandspecialfunctions,andspecialfunctionsrelatedtogrouptheory.
What's a sentence that uses these characters?
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It is impossible in an article like this to give much in the way of details of the impressive publications by Askey on the harmonic analysis of special functions, orthogonal polynomials and special functions, and special functions related to group theory.
Add spaces: Ithinkthisgoesbacktothe1980s,whenallofthiswastrue.Xorax,axwasfasterthansettingaxto0.

Answer: I think this goes back to the 1980s, when all of this was true. Xor ax,ax was faster than setting ax to 0.
Beforeixe60x64.sysscanning,makesureyourPCnovirusandtrojan.WerecommendHitMalware.

Before ixe60x64.sys scanning, make sure your PC no virus and trojan. We recommend HitMalware.
[Q]: [from4hourspriortodeparture]
[A]: [from 4 hours prior to departure]
Problem: Add spaces: Thongofcharmeusewithabigbowbackinasize2XLandcolorblack.

Spaces added:
Thong of charmeuse with a big bow back in a size 2XL and color black.