The spelling of the word "CSFSPE" can be explained using the International Phonetic Alphabet (IPA). It consists of six consonant sounds and no vowels. The first two letters "CS" represent a voiceless alveolar fricative sound followed by a voiceless palatal fricative, represented by "FS". The next consonant sound is a voiceless bilabial plosive, represented by "P". The final two consonant sounds are a voiceless alveolar fricative followed by a voiceless postalveolar fricative, represented by "SPE". In summary, "CSFSPE" is a six-consonant sound sequence with no vowels.