Description: Have a devil king always use their own a very refined and abstract language to talk, no one can understand, but his language is can explain step-by-step adults understand a language, because language is composed of the following two forms of rule by the people's language gradually went up abstract:
(1) alpha and beta 1 beta 2... Beta m
(2) (delta theta delta 1 2... Delta n) and theta delta theta delta n n - 1... 1 theta delta theta.
In both forms, it is explained from left to right. Try to write an explanation system of the demon king language, and use the following two specific rules and the above rules form (2) to explain his words and explain what the adult can understand.
(1) - > B tAdA
(2) A to sae
To set up capital letters to express the words of the demon king; The language of a lowercase alphabet; Greek letters denote variables that can be replaced with capital letters or lowercase letters. The demon king language can contain human vocabulary. The test case is set p97.
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