be be be be be
be be be be be .
b eː eː WORD_BOUNDARY b eː eː WORD_BOUNDARY b eː eː WORD_BOUNDARY b eː eː WORD_BOUNDARY b eː eː WORD_BOUNDARY
b e WORD_BOUNDARY b e WORD_BOUNDARY b e WORD_BOUNDARY b e WORD_BOUNDARY b e WORD_BOUNDARY