-ic c-- ccc ccf cci cck cco ccr cct cfc cff cfi cfk cfo cfr cft ci- cic cif cii cik cio cir cit ckc cki cko ckt co- coc cof coi cok coo cor cot crc crf cri crk cro crr crt ctc ctf cti ctk cto ctr ctt fcc fcf fci fck fco fcr fct ffc fff ffi ffk ffo ffr fft fic fif fii fik fir fit fkc fkf fki fkk fkt foc fof foi fok foo for fot frc frf fri frk fro frr frt ftc ftf fti ftk fto ftr ftt i-f icc icf ici ick ico icr ict ifc iff ifi ifo ifr ift iic iif iii iio iir iit ikc ikf iki ikk iko ikr ikt io- ioc iof ioi ioo ior iot ir- irc irf iri irk iro irr irt itc itf iti itk ito itt k-t kcc kci kck kcr kct kfc kff kfi kfo kic kif kii kik kio kir kit kkc kki kkk kkr kkt koc kof koi kok koo kor kot krc krf kri krk kro krr krt ktc ktf ktk kto ktr ktt o-i oc- occ ocf oci ock oco ocr oct of- ofc off ofi ofo ofr oft oic oif oii oik oio oir oit okc oki okk oko okr oo- ooc oof ooi ook ooo oor oot or- orc orf ori ork oro orr ort ot- otc otf oti otk oto otr ott rcc rcf rci rco rcr rct rfc rff rfi rfk rfo rfr rft ric rif rii rik rio rir rit rkc rkf rkk rko rkt roc rof roi rok roo ror rot rrc rrf rri rrk rrr rrt rtc rtf rti rtk rto rtr rtt tcc tcf tci tck tco tcr tct tfc tff tfi tfk tfo tfr tft tic tif tii tik tio tir tit tkc tkk tko tkr tkt to- toc tof toi tok too tor tot trc trf tri trk tro trr trt ttc ttf tti ttk tto ttr ttt