cccc ccci cchr ccic ccii ccir ccoc ccrc ccri chch chci chic chih chir choc choh choi choo chor chrc chro chrr cicc cich cici cico cicr cihr ciii cior circ cirh ciri ciro cirr coch coco coho coir cooh cor- corc cori coro corr crcc crcr cric croc croh croo cror h-ii hccc hcch hchi hhhh hi-c hicc hich hico hihc hihi hiho hioc hiri hiro hoch hocr hoho hoir hoor horc hori horo horr hrrc iccc icci icco iccr ichc ichi icho ichr icoc icor icrc icrr ihcc ihrc iiii iiio iioi iioo iirc ioci ioii ioio iooi iooo iori ircc iri- iric irio iroc iroh irrc irri occc occi ochi ocro ocrr ohcc ohhi ohho ohio ohoh oici oiii oocr ooho oooh oooo orch orci orco ori- oric orio oro- oror orri orro rccc rcic rhio rhoc rhoh ricc rich rico riho riri rocc roch roco rohr roio roir rooi roor rorc rori roro rrrr