input question: Fix spacing: 6.4Toimproveyourchancesofsuccessmatchmine.comprovidesyouwithafreeicebreakermessagingservice.

output answer: 6.4 To improve your chances of success matchmine.com provides you with a free icebreaker messaging service.
Problem: Thebeautyis,thateveryonecanactuallydecidespontaneously,ifhewishestotakeoneormoredaysinthisuniqueregatta.
What's a sentence that uses these characters?
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The beauty is, that everyone can actually decide spontaneously, if he wishes to take one or more days in this unique regatta.
Add spaces: "Itwasasiflightningstruck,"saysYogaTeacherLoneHunusaboutherfirstexperiencewithkundaliniyoga.

Answer: "It was as if lightning struck," says Yoga Teacher Lone Hunus about her first experience with kundalini yoga.
Itisimportanttoalignexpectationsinthebeginningofthecooperation.

It is important to align expectations in the beginning of the cooperation.
[Q]: [Thisinformationmayberegardedunconfirmed,asinfactEngstromracedinBogensealreadyin1946.]
[A]: [This information may be regarded unconfirmed, as in fact Engstrom raced in Bogense already in 1946.]
Problem: Add spaces: HedidnotwishtoconfessanyparticularauthoritativeChristiancreed,butbasedhisfaithonpersonalreligiousexperiences.

Spaces added:
He did not wish to confess any particular authoritative Christian creed, but based his faith on personal religious experiences.