Sentence:  The interval <WSD>cycle</WSD> C4 consists of the pitch classes 0, 4 and 8; when starting on E, it is realised as the pitches E, G# and C. 
Meaning of the word marked with <WSD> tags:  In musical set theory, an '''interval cycle''' is the set of pitch classes resulting from repeatedly applying the same interval class to the starting pitch class.