$VAR1 = {
          '4' => [
                   [
                     'Perl',
                     'is',
                     'a',
                     'high-level,'
                   ],
                   [
                     'is',
                     'a',
                     'high-level,',
                     'general-purpose,'
                   ],
                   [
                     'a',
                     'high-level,',
                     'general-purpose,',
                     'interpreted,'
                   ],
                   [
                     'high-level,',
                     'general-purpose,',
                     'interpreted,',
                     'dynamic'
                   ],
                   [
                     'general-purpose,',
                     'interpreted,',
                     'dynamic',
                     'programming'
                   ],
                   [
                     'interpreted,',
                     'dynamic',
                     'programming',
                     'language.'
                   ]
                 ],
          '3' => [
                   [
                     'Perl',
                     'is',
                     'a'
                   ],
                   [
                     'is',
                     'a',
                     'high-level,'
                   ],
                   [
                     'a',
                     'high-level,',
                     'general-purpose,'
                   ],
                   [
                     'high-level,',
                     'general-purpose,',
                     'interpreted,'
                   ],
                   [
                     'general-purpose,',
                     'interpreted,',
                     'dynamic'
                   ],
                   [
                     'interpreted,',
                     'dynamic',
                     'programming'
                   ],
                   [
                     'dynamic',
                     'programming',
                     'language.'
                   ]
                 ],
          '2' => [
                   [
                     'Perl',
                     'is'
                   ],
                   [
                     'is',
                     'a'
                   ],
                   [
                     'a',
                     'high-level,'
                   ],
                   [
                     'high-level,',
                     'general-purpose,'
                   ],
                   [
                     'general-purpose,',
                     'interpreted,'
                   ],
                   [
                     'interpreted,',
                     'dynamic'
                   ],
                   [
                     'dynamic',
                     'programming'
                   ],
                   [
                     'programming',
                     'language.'
                   ]
                 ]
        };