Blue Group
Words with the long /eI / sound spelt with ey
hey
they
obey
grey
prey
whey
survey
convey
disobey
purvey
Yellow Group
The sounds /l/ and /k/, /z/ spelt ‘ll’, ‘zz’ and ‘ck’
well
pull
full
wall
buzz
fizz
back
stick
flick
pal