Year 3 group 1 (The sound j spelt with g before e, i, y and the sound j always spelt with j before a,o, and u
gem giant
magic giraffe
energy jacket
jar jog
join adjust

Year 3 group 2 Homophones and near homophones
here hear
heel heal
main mane
mail male
knot not

Year 4 – adding prefix -il before a root word starting with l and prefix ir before a root word starting with r
illegal illegible
illogical illiterate
illicit irregular
irrelevant irresponsible
irrational irresistible