+++++ +++++             (initialize counter (cell #0) to 10)
[                       (use loop to set the next four cells to 70/100/30/10)
    > +++++ ++          (    add  7 to cell #1)
    > +++++ +++++       (    add 10 to cell #2 )
    > +++               (    add  3 to cell #3)
    > +                 (    add  1 to cell #4)
    <<<< -              (    decrement counter (cell #0))
]                   
> ++ .                  (print 'H')
> + .                   (print 'e')
+++++ ++ .              (print 'l')
.                       (print 'l')
+++ .                   (print 'o')
> ++ .                  (print ' ')
<< +++++ +++++ +++++ .  (print 'W')
> .                     (print 'o')
+++ .                   (print 'r')
----- - .               (print 'l')
----- --- .             (print 'd')
> + .                   (print bang)
> .                     (print '\n')