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  `END`KWDfinal`END`PLN num x`END`PUN,`END`PLN y`END`PUN;`END`PLN

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    `END`KWDreturn`END`PLN sqrt`END`PUN(`END`PLNdx `END`PUN*`END`PLN dx `END`PUN+`END`PLN dy `END`PUN*`END`PLN dy`END`PUN);`END`PLN
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`END`PUN}`END`PLN

`END`COM// This is a single-line comment.`END`PLN

`END`COM/*
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*/`END`PLN

main`END`PUN()`END`PLN `END`PUN{`END`PLN
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  `END`TYPString`END`PLN thing2 `END`PUN=`END`PLN `END`STR'''
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  num x `END`PUN=`END`PLN `END`LIT0x123ABC`END`PUN;`END`PLN
  num y `END`PUN=`END`PLN `END`LIT1.8e-12`END`PUN;`END`PLN
  `END`KWDbool`END`PLN flag `END`PUN=`END`PLN `END`KWDfalse`END`PUN;`END`PLN
  `END`TYPString`END`PLN raw `END`PUN=`END`PLN r`END`STR"This is a raw string, where \n doesn't matter"`END`PUN;`END`PLN
`END`PUN}`END'