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"HFPU." Fullformexpand.com, https://www.fullformexpand.com/hfpu/846717. Accessed 25 Jan. 2026.
Fullformexpand.com, 2026. "HFPU." Accessed January 25, 2026. https://www.fullformexpand.com/hfpu/846717.
"HFPU." (n.d.). Fullformexpand.com. Retrieved January 25, 2026, from https://www.fullformexpand.com/hfpu/846717.
HFPU. (2026). Fullformexpand.com. Available at: https://www.fullformexpand.com/hfpu/846717 (Accessed: 25 January 2026).