#include <iostream>
	#include <map>
	#include <list>
 
	const std::map<char, std::string> rules {
		{'a', "bc"},
		{'b', "a"},
		{'c', "aaa"},
	};
	int main()
	{
		std::string line;
		while(getline(std::cin, line))
		{
			std::list<char> seq;
			for(char c: line)
				seq.push_back(c);
 
			while(seq.size() > 1)
			{
				char front = seq.front();
				seq.pop_front();
				seq.pop_front();
				for(char c: rules.at(front))
					seq.push_back(c);
				for(char c: seq)
					std::cout << c;
				std::cout << std::endl;
			}
			std::cout << std::endl;
		}
		return 0;
	}

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

YWFhCmFhYWFh

aaa
aaaaa