oreh orel oreo orer orex orhe ori- oric orid orie oril orio orix orle orlo oro- oroe oror orri orro oxer oxi- oxic oxid oxie oxo- oxox oxxo rccc rcdc rcde rcic rcid rcle rcrd rder rdio rdoc recc recd rece rech reci recr redc redd rede redh redi redl redo redr redx reed reel rehe rehi reid reii reil reir reld rele rell relo reod reol rerd rere reri rero rexx rhce rhee rheo rhex rhio rhli rhoc rhod rhoh ricc rice rich rico ridc ridd ride ridi rido ridx ried riel rier riex riho rile rill rilo riol rire riri rixc rixe rixo rlee rocc roce roch roco rodd rode rodi rodo roed roel roer rohe rohl rohr roid roil roio roir rold role roll rolo rood rooi rool roor roox rorc rore rori roro roxo rred rrle rrrr x-ed xcel xcii xcri xdcc xeer xer- xero xexe xhoi xhri xico xidi xihe xiii xil- xili xill xixi xlii xlix xloc xlox xoco xolo xoro xoxo xrcd xrod xxii xxix xxxi xxxo xxxx