In each of the following questions find out the alternative which will replace the question mark.
Corden : zrogbq :: ? : pxivro

     As                         Similarly
$c\stackrel{-3}{\to }z$                   $s\stackrel{-3}{\to }p$
$o\stackrel{+3}{\to }r$                  $u\stackrel{+3}{\to }x$
$r\stackrel{-3}{\to }o$                   $l\stackrel{-3}{\to }i$
$d\stackrel{+3}{\to }g$                 $s\stackrel{+3}{\to }v$
$e\stackrel{-3}{\to }b$                  $u\stackrel{-3}{\to }r$
$n\stackrel{+3}{\to }q$                 $l\stackrel{+3}{\to }o$