nl_tokens: Returns the word combinations for the given text based on the combination size .
pl_tokens: function getWordCombinations ( text , combinationSize , functionWords ) { const sentences = getSentences ( text ) ; let words , combination ; return flatMap ( sentences , function ( sentence ) { sentence = sentence . toLocaleLowerCase ( ) ; sentence = normalizeQuotes ( sentence ) ; words = getWords ( sentence ) ; return filter ( map ( words , function ( <mask> , i ) { // If there are still enough words in the sentence to slice of. if ( i + combinationSize - 1 < words . length ) { combination = words . slice ( i , i + combinationSize ) ; return new WordCombination ( combination , 0 , functionWords ) ; } return false ; } ) ) ; } ) ; }