input: 1 ; output: 1 ; expressions: `.'`a'`_'`h' => `_'`a'`c'`h' ; `_'`e'`|' => `|'`"' ; `.'`i'`|' => `|' 39 ; `a'`|' => `|' `a' ; `e'`|' => `|'`e' ; `i'`|' => `|'`i' ; `o'`|' => `|'`a'`u' ; `A'`|' => `|'`a'`u' ; `_' `e' => `e' `i' ; `_'`o' => `o' ; `.'`a' => `:' `a' ; `.'`e' => `:' `e' ; `.'`i' => `_' 39 ; `.'`o' => `:' `+' ; `.'`u' => ; `_'`h' => `c' `h' ; `_'`t' => `.' `t' ; `.'`s' => `t'`s' ; `,'`s' => `^'`s'`h' ; `^'`s' => `s'`h'`^' ; `.'`b' => `b' ; `.'`g' => `g'`g' ; `.'`d' => `d'`d' ; `.'`k' => `k' ; `.'`p' => `p' ; 39 => `^' 39 ; `A' => `a'`u' ; `E' => `e'`i'`y' ; `I' => `i'`y' ; `U' => `o'`o' ; `b' => `v' ; `g' => \1 ; `d' => \1 ; . => \1 ;