Elevator 10 is moving up.
Top
12
11
10
9
8
7
6
5
4
3
2
1
0 current
Bottom

=====================

Elevator 10 is idle.
Top
12
11
10
9
8 current
7
6
5
4
3
2
1
0
Bottom

=====================

Elevator 10 is moving down.
Top
12
11
10
9
8 current
7
6
5
4
3
2
1
0
Bottom

=====================

Elevator 10 is idle.
Top
12
11
10
9
10
9
9
8
7
7
6
5
4
3
2 current
1
0
Bottom