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1-3:BCB   4-6:CBA   7-9:ABC   10-12:CBC   13-15:ABA

16. 1718    17. the 1930’s/1930s     18. the elderly    19. the third floor    20. cigarette

21 - 25: DBCDA    26 - 30: BCADC

31. The;    32. them;     33. Compared;    34. that/who;    

35. more;36. which;   37. encourages;38 since;   

39. contributions; 40. abroad;

41 -45: BCDAB   46-50: CDBAD   51 ?55:CAADB

56-60: BCADF

One possible version

One possible version