Special Facial Racial
Some examples of words that sound like "sh" are "sugar" and "sherbet." In the case of "tissue," the "ss" sound is pronounced differently than "sh" and does not have the same sound. "Pressure" also does not have the "sh" sound.
Some words that end in "cial" include special, beneficial, official, and artificial.
Sure! Here are some words that contain the "sh" sound: Ship Shoes Fish Brush
The "ch" makes a "sh" sound in words like chef or machine because it follows the rule of English pronunciation where "ch" can have a "sh" sound when it comes after an "e" or an "i." This pronunciation comes from the influence of French and other languages on English.
It is USUALLY pronounced as an s, but not always. There's the -cious words, where it has the sound 'sh': delicious precious specious meretricious etc. (not to mention 'licorice') Similarly, there the 'sh' sound for -cial words like facial and special. Also there are words that have been adopted from other languages but kept a trace of their original pronunciation: Celtic, for example. There are some other pronuniciations for ce, such as cello (pronounced 'chello'), cembalo (chembalo, with a 'k' sound). In the words foci and loci (acceptable plurals of focus and locus) the c is pronounced like a 'k'. The letter 'c' also makes the 'k' sound in the word 'arcing.'
Conscience
the sh was represented by a horizontal rectangle, called a "garden pool" 
Words that produce the "sh" sound with the letters "ce" include "certain," "ceremony," and "cereal." In these examples, the "ce" combination is pronounced as "sh." This phonetic occurrence is less common but appears in specific words in English.
Some words with "ch" that sound like "sh" include "champagne," "chandelier," and "chaise."
There are several words that contain "sh" but do not make the typical "sh" sound, such as "island," "rubbish," and "mischief." In these cases, the "sh" may be silent or pronounced differently due to the surrounding letters. While it's hard to provide an exact count, such words are relatively rare in English.
official special artificial prejudicial social judicial
Mission, passion, pressure.