The “c h” sound makes a different sound than just the mixture of “c” and “h”.

ch

rich
such
much
ranch
pinch
inch
winch
lunch
punch
bunch
hunch
batch
dispatch
Dutchman
latch
lunchbox
sandwich
botch
finch
gulch
henchman
hitch
satchel
conch
hutch
linchpin
notch
retch
belch
ditch
fetch
ketch
match
bench
hatch
ketchup
kitchen
matchless
mismatch
mulch
nuthatch
patch
catch
Dutch
matchlock
munch
witch

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