-th hhh hhk hho hhr hht hhz hkh hkk hko hkr hkt hoh hok hoo hor hot hr- hrh hrk hro hrr hrt hrz hth htk hto htr htt htz hzo hzt k-t k-z khh khk kho khr khz kkh kkk kkr kkt koh kok koo kor kot koz krk kro krr krt kth ktk kto ktr ktt kzo ohh oho ohr oht okk oko okr oo- ooh ook ooo oor oot or- orh ork oro orr ort orz ot- oth otk oto otr ott otz ozo ozt ozz rh- rhh rho rhr rht rkk rko rkt rkz roh rok roo ror rot roz rrh rrk rrr rrt rtk rto rtr rtt rtz rzo th- thh thk tho thr tht thz tkk tko tkr tkt tkz to- toh tok too tor tot toz trh trk tro trr trt trz tth ttk tto ttr ttt zho zhr zo- zok zoo zor zot zrh zro ztr zzr zzt zzz