-ic c-- ccc cci cck cco ccr cct ci- cic cii cik cio cir cit ckc cki cko ckt co- coc coi cok coo cor cot crc cri crk cro crr crt ctc cti ctk cto ctr ctt icc ici ick ico icr ict iic iii iio iir iit ikc iki ikk iko ikr ikt io- ioc ioi ioo ior iot ir- irc iri irk iro irr irt itc iti itk ito itt k-t kcc kci kck kcr kct kic kii kik kio kir kit kkc kki kkk kkr kkt koc koi kok koo kor kot krc kri krk kro krr krt ktc ktk kto ktr ktt o-i oc- occ oci ock oco ocr oct oic oii oik oio oir oit okc oki okk oko okr oo- ooc ooi ook ooo oor oot or- orc ori ork oro orr ort ot- otc oti otk oto otr ott rcc rci rco rcr rct ric rii rik rio rir rit rkc rkk rko rkt roc roi rok roo ror rot rrc rri rrk rrr rrt rtc rti rtk rto rtr rtt tcc tci tck tco tcr tct tic tii tik tio tir tit tkc tkk tko tkr tkt to- toc toi tok too tor tot trc tri trk tro trr trt ttc tti ttk tto ttr ttt