sun up sun down
sun up sun down
v adv n adv
sun up sun down .
s ʌ n WORD_BOUNDARY ʌ p WORD_BOUNDARY s ʌ n WORD_BOUNDARY d aʊ n WORD_BOUNDARY
s u n WORD_BOUNDARY u p WORD_BOUNDARY s u n WORD_BOUNDARY d o w n WORD_BOUNDARY