d -> around
b -> for inviting
a-> from Amsterdam
d-> in
b => from
c -> with
a -> on
c-> from
c -> on
d => with
d -> was on
d -> to
c -> for
câu này kh biết =((
d -> to
d -> by
c -> in
c -> despite
a -> after
1 b => on
2 b => for inviting
3 a => from Amsterdam
4 b => in
5 b => from
6 c => with
7 c => on
8 a => on
9 c => from
10 c => on
11 d => with
12 d => was on
13 b => more skills
14 c => for
15 câu này ko lỗi
16 d => to
17 d => by
18 c => in
19 c => despite
20 a => after
