這題看起來感覺應該不難，但小弟不才看不懂題目的意思
Considering the following rules for sroting a string:
(1)ba->ab
(2)ca->ac
(3)cb->bc
Step by step list how you use the "least-uesd first" conflict resoulution
to complete thesorting for string "cbaca".
麻煩各位大大幫忙解釋一下