The spelling of the word "in to open" may seem a bit confusing. However, it's important to note that the two words "in" and "to" are separate entities in this phrase. The stress is placed on the first syllable of "in" (pronounced [ɪn]) and the second syllable of "to" (pronounced [tuː]). The sound between the two words is a glottal stop, represented by the symbol [ʔ]. When pronounced correctly as [ɪnʔtuːˈəʊpən], the phrase means "enter to open".