a = lambda n:((n+1)&0b11111111)
e = lambda n:((n&0b00010101)<<2)|((n&0b10101000)>>2)|((n&0b01000000)<<1)|((n&0b00000010)>>1)
u = lambda n:((n+0b11111111)&0b11111111)
 
metaexprs = [[]]*256
 
for metaindex,exprs in enumerate(metaexprs):
	exprs = [""]*256
	exprs[metaindex] = "w" if metaindex else "z"
 
	length = 1
 
	while not all(exprs):
		for index,expr in enumerate(exprs):
			if len(expr) == length:
				candidate_a = a(index)
				candidate_e = e(index)
				candidate_u = u(index)
				if (not exprs[candidate_a]) or (length+1 < len(exprs[candidate_a])):
					exprs[candidate_a] = expr+"a"
				if (not exprs[candidate_e]) or (length+1 < len(exprs[candidate_e])):
					exprs[candidate_e] = expr+"e"
				if (not exprs[candidate_u]) or (length+1 < len(exprs[candidate_u])):
					exprs[candidate_u] = expr+"u"
		length += 1
 
	metaexprs[metaindex] = exprs
 
print("Method 1:")
for char in "Hello, world!\r\n":
	print(metaexprs[0][ord(char)]+"w")
 
print("")
 
print("Method 2:")
for prev,curr in zip("\x00Hello, world!\r", "Hello, world!\r\n"):
	candidate1 = metaexprs[ord(prev)][ord(curr)]+"w"
	candidate1 = candidate1[1:] if candidate1[0]=="w" else candidate1
	candidate2 = metaexprs[0][ord(curr)]+"w"
	print(sorted([candidate1,candidate2],key=len)[0])

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