within words and phrases, japanese allows long sequences of phonetic vowels without intervening consonants, pronounced with hiatus, although the pitch accent and slight rhythm breaks help track the timing when the vowels are identical. sequences of two vowels within a single word are extremely common, occurring at the end of many "i"-type adjectives, for example, and having three or more vowels in sequence within a word also occurs, as in "aoi" 'blue/green'. in phrases, sequences with multiple "o" sounds are most common, due to the direct object particle 'wo' (which comes after a word) being realized as "o" and the honorific prefix 'o', which can occur in sequence, and may follow a word itself terminating in an "o" sound; these may be dropped in rapid speech. a fairly common construction exhibiting these is "... (w)o o-okuri-shimasu" 'humbly send ...'. more extreme examples follow: