from one to xoney
from  
	
 to x 
	
y
from dumb to xdumby
from  s  s  to x s  s y
from ff to xffy
from 
r

r
 to x
r

r
y
from 	t		t	 to x	t		t	y
from vv to xvvy
from  
	 to x 
	y
from 
n

n
 to x
n

n
y