[START]
-opt-
:per
30
-optend-
:addcarry
2
  
200
20
30
15
[END]
[START]
-opt-
:per
30
-optend-
:addcarry
2
  
190
18
28
14
[END]
[START]
-opt-
:per
30
-optend-
:addcarry
2
 ǰ 
500
40
50
25
[END]
[START]
-opt-
:per
30
-optend-
:addcarry
2
ũ  
200
20
30
15
[END]
[START]
-opt-
:per
30
-optend-
:addcarry
2
̽  
200
20
30
15
[END]