This is a double consonant and is widely used in the middle or end of a word.
The sounds of FF, LL, SS & ZZ are found in English Language words such as press, princess, glass, grass, compass, impression, dress, cross, business, fizz, spill, piss, miss, hiss, kiss, dell, fell, spell, well, fizz, fuzz and many more listed as under in the working table.
From the upper consonants above, when we join both these letters there is always one sound and double letters are usually emphasized.
