Unit 2 - an, ap, at

Unit 3 - ed, eg, en, et

Unit 4 - ig, in, ip

Unit 5 - it, ix

Unit 6 - ob, od, og

Unit 7 - op, ot, ox

Unit 8 - ub, ug, un

Unit 9 - up, ut

Unit 10 - ar, or

Unit 11 - er, ir, ur