`COM/* A multi-line
 * comment */`END`PLN
`END`STR'Another string /* Isn\'t a comment'`END`PUN,`END`PLN
`END`STR"A string */"`END`PLN
`END`COM-- A line comment`END`PLN
`END`KWDSELECT`END`PLN `END`PUN*`END`PLN `END`KWDFROM`END`PLN users `END`KWDWHERE`END`PLN id `END`KWDIN`END`PLN `END`PUN(`END`LIT1`END`PUN,`END`PLN `END`LIT2.0`END`PUN,`END`PLN `END`LIT+30e-1`END`PUN);`END`PLN
`END`COM-- keywords are case-insensitive.`END`PLN
`END`COM-- Note: user-table is a single identifier, not a pair of keywords`END`PLN
`END`KWDselect`END`PLN `END`PUN*`END`PLN `END`KWDfrom`END`PLN user-table `END`KWDwhere`END`PLN id `END`KWDin`END`PLN `END`PUN(`END`PLNx`END`PUN,`END`PLN y`END`PUN,`END`PLN z`END`PUN);`END