The cious/tious sound has not been included.
Board 1 covers ea,oi,a-e,i-e,o-e,u-e.
Board 2 covers aw,are,ur,er,ow,ai.
Board 3 covers oa,ew,ire,ear,ure,tion
Board 4 is a mystery board where different coloured question
marks have been used and covers all sounds from set 2