1 activity 05-06

2 adequate 05-06

3 advantage 05-06

4 advertising 05-06

5 affect 05-06

6 aid 05-06

7 aim 05-06

8 allow 05-06

9 ancient 05-06

10 appropriate 05-06

11 area 05-06

12 assist 05-06

13 automation 05-06

14 barter 05-06

15 benefit 05-06

16 boost up 05-06

17 boredom 05-07

18 businesses 05-07

19 carry 05-07

20 centralised economy 05-07

21 centralised 05-07

22 economy 05-07

23 change 05-07

24 characteristics 05-07

25 choice 05-07

26 choose 05-07

27 coincidence 05-07

28 combination 05-07

29 commerce 05-08

30 commercial 05-08

31 communication 05-08

32 compete 05-08

33 competition 05-08

34 concentrate 05-08

35 concentration 05-08

36 condition 05-08

37 congestion 05-08

38 consume 05-08

39 consumer 05-08

40 controlled economy 05-08