What are some literary devices used in this poem, list at lease 4 THANK YOU! :)?

Rhyme is the most obvious one. There is also personification in the line "My heart aches...". You could say that there is alliteration with "questioning in perfect quietness" because of the repetition of the 'qu' sound. Also, there is a parallel structure with the repetition of the line "My heart aches for the one beside the door".