-ic a-a a-c a-i aaa aac aaf aai aak aao aap aar ac- aca acc acf aci ack aco acp acr af- afa afc aff afi afk afo afp afr ai- aia aic aif aii aik aio aip air aka akc aki akk ako akp akr aoa aoc aof aoi aok aoo aop aor ap- apa apc apf api apk apo app apr ar- ara arc arf ari ark aro arp arr c-- caa cac caf cai cak cao cap car cca ccc ccf cci cck cco ccp ccr cfa cfc cff cfi cfk cfo cfp cfr ci- cia cic cif cii cik cio cip cir cka ckc cki cko co- coa coc cof coi cok coo cop cor cpa cpc cpf cpi cpk cpo cpp cpr cra crc crf cri crk cro crp crr faa fac faf fai fak fao fap far fca fcc fcf fci fck fco fcp fcr ffa ffc fff ffi ffk ffo ffp ffr fia fic fif fii fik fip fir fka fkc fkf fki fkk fkp foa foc fof foi fok foo fop for fpa fpc fpi fpk fpo fpp fpr fra frc frf fri frk fro frp frr i-f ia- iaa iac iaf iai iao iap iar ica icc icf ici ick ico icp icr ifa ifc iff ifi ifo ifp ifr iia iic iif iii iio iip iir ika ikc ikf iki ikk iko ikr io- ioa ioc iof ioi ioo iop ior ipa ipc ipf ipi ipo ipp ipr ir- ira irc irf iri irk iro irp irr ka- kaa kac kaf kai kak kao kap kar kca kcc kci kck kcp kcr kfa kfc kff kfi kfo kia kic kif kii kik kio kip kir kkc kki kkk kkp kkr koa koc kof koi kok koo kop kor kpa kpc kpf kpi kpk kpo kpp kpr kra krc krf kri krk kro krp krr o-i oaa oac oaf oai oak oao oap oar oc- oca occ ocf oci ock oco ocp ocr of- ofa ofc off ofi ofo ofp ofr oia oic oif oii oik oio oip oir oka okc oki okk oko okp okr oo- ooa ooc oof ooi ook ooo oop oor op- opa opc opf opi opk opo opp opr or- ora orc orf ori ork oro orp orr p-p paa pac paf pai pak pao pap par pca pcc pcf pci pck pco pcp pcr pfa pfc pff pfi pfk pfo pfp pfr pia pic pif pii pik pio pip pir pka pkc pkf pki pko pkp pkr poa poc pof poi pok poo pop por ppa ppc ppf ppi ppk ppo ppp ppr pra prc prf pri prk pro prp prr ra- raa rac raf rai rak rao rap rar rca rcc rcf rci rco rcp rcr rfa rfc rff rfi rfk rfo rfp rfr ria ric rif rii rik rio rip rir rkc rkf rkk rko rkp roa roc rof roi rok roo rop ror rpa rpc rpf rpi rpk rpo rpp rpr rra rrc rrf rri rrk rrp rrr