Week 1 - Lessons 1 to 5 - 'e'/ee, 'i'/igh/, 'u'/ue/, 'c'/s/ and 'g'/j/
Week 2 - Lessons 6 to 10 - ‘o’/oa/, ‘o’/oo/, ‘ou’/oo/, ‘ou’/u/, ‘ou’/oa/, ‘a’/ai/, ‘a’/o/, ‘y’/igh/, ‘y/ee/, ‘y’/i/, ‘ch’/k/ and ‘ch’/s/