Best guesses

Best guesses are used to spell words that have a sound that may be spelt in different ways.
Using them we have more chances to spell them right!

sound
best guess
c
c before a, o, u 
k before i, e
ck at the end
ch
always ch
sh
always sh
oi
oi in the beginning and middle
oy at the end
ou
ow at the end of followed by n
ou the rest
er
er in more than one syllable words
air
always air
d
ed in past tenses
d the rest
f
ph in graeco-latin words
f the rest
g
gu before e, i
g the rest
j
g before e, i and y including magic e
dge end of words and after a short vowel
j the rest
s
c in ce, ci, cy
s the rest
t
ed in past tenses
t the rest
s
c in ce, ci, cy
s the rest
z
z at the beginning
zz at the end after short vowel
_ze after a vowel diagraph