The spelling of the word "ChTX" can be explained using the International Phonetic Alphabet (IPA) as /kətʃ.tɛks/. The first syllable is pronounced with a "k" sound (represented by the symbol /k/) followed by an "uh" sound (represented by the symbol /ə/) and a "ch" sound (represented by the symbol /tʃ/). The second syllable is pronounced with an "eh" sound (represented by the symbol /ɛ/) and a "ks" sound (represented by the symbol /ks/). Together, this creates the unique spelling and sound of the word "ChTX."