s/^/====!=  =!      !=  =!===!/
s/!/=\n=/g
/4/s/./&&&&/g
/3/s/./&&&&&&&&&&&&&/g
:1
s/\(.*\n\)\n/\1\1/m
t1
:
s/=/Ea/
s/=/st/
s/=/er/
s/=/he/
s/=/gg/
t
s/\w*$//