all [(1,'q'),(2,'w'),(3,'e')] [(4,[('a',5),('s',6),('d',7)])] [([(8,9),(10,11)],[('z','x'),('c','v')])] [(12,'qq')] [(4,[]),(5,[('b',6),('n',7)])] [([],[]),([(44,55),(66,77)],[])] col1 [1,2,3] ['q','w','e'] [12] ['qq'] col2 [4] [[('a',5),('s',6),('d',7)]] [['a','s','d']] [[5,6,7]] [4,5] [[],[('b',6),('n',7)]] [[],['b','n']] [[],[6,7]] col3 [[(8,9),(10,11)]] [[('z','x'),('c','v')]] [[8,10]] [[9,11]] [['z','c']] [['x','v']] [[],[(44,55),(66,77)]] [[],[]] [[],[44,66]] [[],[55,77]] [[],[]] [[],[]] read files 4 6 0 899984 7199412 1 899987 7199877 2 899990 7200255 3 899993 7199883 4 899996 7199798 5 899999 7200306 6 900002 7200064 7 900005 7199429 8 900008 7200067 9 899992 7199993 0 [] 0 [0] 1 [0,2] 3 [0,2,8] 6 [0,2,8,18] 2 3 0 2 2 3 4 4 0 0 0 1 0 2 0 3 0 1 1 2