halt halt halt halt halt
halt halt halt halt halt !
h a l t WORD_BOUNDARY h a l t WORD_BOUNDARY h a l t WORD_BOUNDARY h a l t WORD_BOUNDARY h a l t WORD_BOUNDARY
h a l t WORD_BOUNDARY h a l t WORD_BOUNDARY h a l t WORD_BOUNDARY h a l t WORD_BOUNDARY h a l t WORD_BOUNDARY