Add
1
LLL
2
3
Both
4
LLL
5
Both
LLL
6
Unique B
Unique C

Modify
1
LLL
3
4
5
Both
7
Both
LLL
10
Single B

Delete
1
2
RRR
3
4
5
RRR
6

１
左に追加
２
３
両方追加
４
両方変更（左）
６
８