The spelling of the word "Andera" can be easily explained through the use of IPA phonetic transcription. The first syllable "An" is pronounced /æn/ to represent the short "a" sound, followed by the /d/ sound in the second syllable. The third syllable "e" is pronounced as /ɛ/ to represent the short "e" sound. Lastly, the fourth syllable "ra" is pronounced as /rɑ/ to represent the long "a" sound. Putting it all together, the correct spelling of the word "Andera" is phonetically represented as /ˈæn.dɛr.ɑ/.