BEGIN{$_=7 # Change this number to control pivot -1}foreach $.(int(length()/2)..length()-2){print ((/\s/?s/\w(\s+)\w/ $1 /:s/(\w{$;})./$1 /)?$_:1) ;}BEGIN{($;,$_,$\)=($_,join(''=>chr(65)..chr(65+ $_),reverse(chr(65)..chr(65+$_-1))),$/);print}