arriba arriba ábrete
arriba abri
adv imp
arriba arriba ábrete .
a r i β a WORD_BOUNDARY a r i β a WORD_BOUNDARY a β ɾ e̞ t e̞ WORD_BOUNDARY
a r r i b a WORD_BOUNDARY a r r i b a WORD_BOUNDARY á b r e t e WORD_BOUNDARY . WORD_BOUNDARY