The spelling of the phrase "study at valid" follows the English pronunciation rules. The initial consonant cluster "st" is pronounced as [st], followed by the vowel sound "uh" or [ʌ]. The second syllable "dy" features the vowel sound "ee" or [i]. The final consonant cluster "v-l-d" is pronounced as [væld]. Thus, "study at valid" can be phonetically transcribed as [ˈstʌdi æt ˈvæld]. It means to pursue an education at a legitimate and lawful institution.