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#!/usr/bin/env lua
-- run <script> <number>
local dict={
[0]="0",
"_@",
"abc",
"def",
"ghi",
"jkl",
"mno",
"pqrs",
"tuv",
"wxyz"
}
function poss(dict,w)
if w:len()==0 then return {""} end
local prev=poss(dict,w:sub(1,-2))
local out={}
for _,wrd in ipairs(prev) do
for i=1,string.len(dict[tonumber(w:sub(-1))]) do
table.insert(out,wrd..dict[tonumber(w:sub(-1))]:sub(i,i))
end
end
return out
end
for _,w in ipairs(poss(dict,arg[1])) do
print(w)
end
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