tri- tric trie trin trip tris trit triz trpc trpe trpn trpp trps trsi trst trtc trte trtr tscc tscp tsec tsen tses tset tsez tshe tshi tshs tsin tsis tspn tsps tspt tsse tssi tssr tsst tstc tsts ttcn ttcp tten tter ttss tttt tzsp tzzt zech zeep zees zehi zein zeir zeis zeit zeni zenn zens zeph zepp zeps zeri zert zest zete zeze zhee zhen zice zich zics zien ziip zinc zine zinn zins ziph zipp zips zirc ziri zirp zisi zist ziti zits zizi zizz znen znes znet zrce zrin zrtp zrze zsss ztst zzhz zzzs zzzz