ABCD DCBA 要するに階段
問題文
(afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;)
→
(afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;)
→
(afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;)
→
(afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;)
→
(afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;)
→
(afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;)
→
(afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;afj;)
→
(;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa)
←
(;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa)
←
(;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa)
←
(;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa)
←
(;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa)
←
(;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa)
←
(;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa;jfa)
←